I’ll tell you what’s up: the Guitar Hero guitars work with Rock Band 2 on PlayStation 3.

This was a big conundrum last year when we realized Activision and Harmonix weren’t going to play nice and let us use their guitars on the competing games.

We’re looking into what happened, but for sure we know that the Guitar Hero III guitar works in Rock Band 2 on PlayStation 3.

GameSpot has a good, slightly dated chart for other games.

We do not know if the Rock Band 2 special edition guitar works on Gutar Hero III or World Tour yet.

But one interesting twist, the Nyko FrontMan guitar that we love so much does still work with all games. However, it does not work in Rock Band 2 on “Rock Band Mode.” There is a switch on the Frontman’s receiver that selects between “Guitar Hero” and “Rock Band” modes — and that switch has to be on “Guitar Hero” in order to play Rock Band 2.

For those about to rock — we salute you. And for those who aren’t, Activision is cool with that too.

Tradmork reported that Activision, makers of the highly successful Guitar Hero series have recently filed a trademark for the term “DJ Hero.”

The official documents, filed February 8, state that Activision is looking to use the term in conjunction with “computer game software and related instruction manual sold together as a unit. Interactive video game programs; computer game discs; downloadable software for use in connection with computer games; video game controllers; interactive video game comprised of a CD or DVD sold as a unit with a video game controller.”

While there’s no official word from Activision about the possible turntable simulator, it should be noted that gamers have been clamoring for a title similar to what is being hinted at for quite some time. Check out the custom Guitar Hero turntable Gizmodo reported on at CES this year.

This is far from a confirmed game announcement. In fact, Activision has filed multiple trademarks dealing with the Guitar Hero franchise merely to protect the name. Ever hear of Guitar Villain? What about Drum Hero? They may not be games, but Activision holds the rights to these names just like they now hold the rights to DJ Hero.

You know we’re gonna be following this one closely.

Guitar Hero III came into the world with a large reputation to live up to. For months, gamers have been waiting to get their hands on the newest hit in the Guitar Hero franchise. It represents one of the best party games around and with new multiplayer modes, and it’s better than ever.

Guitar Hero III boasts a brand new set list of over 60 songs and a ton of downloadable content.

If you have never played a guitar hero game, here’s a quick overview: you take the role of one of the game’s playable characters and battle through the career mode on four difficulties, ranging from easy to expert. There are five buttons on the guitar representing different frets. To play a note, you have to hold down the fret button and strum the guitar. Sounds easy right? Now just do that about 2000 times in 5 minutes. In this game, practice makes perfect, and sticking with it is the key. The learning curve is difficult , but once you get the hang of this game, you will be quite pleased. On to the review:

Guitar Hero III tried to go more in depth with a career mode, but this title isn’t going to be known just for a great storyline. The game starts off with you and some friends starting a band, and after playing five or six songs you move onto the next level and the next set of songs. You go through it all, including your garage band days, your music video and playing in sold out arenas. The storyline in general is quite humorous at times and is fun to watch as the comic book-like characters show their emotions.

While the Guitar Hero franchise isn’t known for breakthrough graphics, but for the spectators Guitar Hero III has done a great job of making the characters look better and the places where you perform are much more detailed. After the prequel was attacked for poor graphics you can tell they really worked to squelch the critics.

The song list is in a word, Excellent. The wide variety of songs make this a very versatile list and there’s something on it for everyone. Whether you’re an 80′s rocker or a fan of the metal, you will be pleased. Some bands featured in the game include Guns and Roses, Slipknot and Kiss. The bonus songs feature some obscure titles you probably have never heard of, but they are very fun to play.

The multiplayer has been improved on huge levels. There are now more ways to embarrass or cooperate with your friends while playing. The multiplayer provides a great way to spend a night with a friend. On the other hand, if your friends have something better to do, you now have the choice of signing into Xbox Live to find a partner or an opponent or bandmate.

Cooperative mode allows two players to play at once. In most cases one player will take the role of the bassist, and one will be the guitarist. In some songs, rhythm guitar and lead guitar are played. Most achievements will come through playing co-op songs and trying to earn huge note streaks and point totals, and the ever-sought after 1,000,000 points.

The Face-Off modes return. You can either try to match your opponents skill level in a Pro Face-Off, in which you are both given the same set of notes, or you can battle them in a Face-Off in which you can go at different difficulties and battle for highest score. This mode represents a great way to show off.

The new “Battle” mode allows players to instead of achieving star power (a power-up which doubles your note-score) you can gain the ability to attack your opponent. You can break their strings, make their note-screen flash, and even raise the difficulty level they are playing on. This was an instant fan-favorite with the people on Xbox Live.

Guitar Hero III is a great game, and an addicting one at that. It’s great fun to play, especially with a bunch of friends and once you start, you won’t stop until you’re the best.

Quick hits:

Publisher: Microsoft
Developer: Neversoft Entertainment
Platform: Xbox 360, Wii, PS3, PS2
Genre: Music
Players: 1-2
Launch Date: October 28, 2007

Playability: 5 out of 5 stars
Learning Curve: 4 out of 5 stars
Sound: 5 out of 5 stars
Graphics: 4 out of 5 stars
Overall: 4.5 out of 5 stars