No
Yes!
yes, you can
yes. i am pretty sure you can.
no
Yes
Yes you can but you need the ps3 game , ps2 rock band game won't work but controllers will . Yes you can but you need the ps3 game , ps2 rock band game won't work but controllers will .
Rock Band games on PS2 only support PS2-style guitars and PS2/3 Rock Band guitars and drum kits. Guitar Hero: Aerosmith and newer on PS2 support all instruments from all consoles that the games have note charts for (so no drums on GH:Aerosmith but 360 and PS3 drums work on all full-band GH games).
probably not...
No, you can't use controllers between different consoles, but only with the same console. So you can use Guitar Hero PS2 controllers with Rock Band PS2, but not Wii.
you can use it for the bass, guitar, and drums, just not the microphone
yes
No a controller is not a Microphone and can not be one