sometimes smart people act crazy
Yes :)
Because it isn't
No, Gamecube Is from Nintendo and The PS2 is From Sony.
Yes, I did it just yesterday.
== == It is only accessible for downloadable purchase on your PlayStation Network for Ps3 or Xbox Live for Xbox 360. You can't get it on Ps2, Wii, or PC.
yes, all of the guitar hero controllers are compatible within the same console. For example any guitar hero controller made for ps2 will work on any guitar hero game on ps2.
Yes
You can use any guitar hero guitar with any guitar hero.
By Beating Through the Fire and Flames on Easy
yes
yes
if there both on the same console then yes.