Yes. You have to put it on different then lite's area
Yes, if you buy the entire set (it comes in a small box...with Axel Steel on the cover - in reference of On Tour.) then there will be a converter in it that allows people using the original Nintendo to play Guitar Hero. This works for both Guitar Hero: On Tour, and Guitar Hero: Decades. ;)
Yes. The Guitar is compatible with both guitar hero 2 and 3. Also, the guitar hero guitar on xbox 360 is compatible with rock band for xbox 360.
The current Guitar Hero games out for Nintendo DS and Nintendo DS Lite will NOT work in the Nintendo DSi. We can only hope that there will be some decision within the Guitar Hero Headquarters that will cause them to come out with a new Guitar Hero game compatible with the new Nintendo DSi. A Solution (Maybe): If we're lucky the Guitar Hero Company will create a Guitar Hero game that can be downloaded from the Nintendo DSi Store. Therefore, they may release some sort of device (key pad) that hooks into the DS Slot. It would be awkward but it would be better than nothing, correct?
Yes it is compatible with GH 5.
The Guitar Hero III guitar is completely compatible with Guitar Hero: World Tour provided you're still using it with the Wii.
yes
Yes they are 100% compatible.
Yes, all Guitar Hero guitars are compatible with every guitar hero.
Depending upon the condition of the game, you can buy them for $40-$50. :) If you're selling be fair to the buyer and tell them of the faults in the game, and make sure to price fairly. By the way, Guitar Hero for the Nintendo DS can be used on the original Nintendo DS, and the Nintendo DS Lite. (Sadly, Nintendo DSi cannot cope with Guitar Hero, so if you love to play Guitar Hero don't trade in your Nintendo DS Lite to GameStop for the extra $70 off of the Nintendo DSi...)
Yes it is compatible \X...X/
yes
Yes