i got an idea and question
 

Ok i know you can store Emulators to your hard drive when the system is modded is there any application to were ican put a ps2 emulator on there and have it play ps2 disks and same to gamecube because it kind of seems like a no brainer but theres probably more to it though but they say xbox has more power and memory then ps2 plus u can hook up a ps2 controller using the special peice so is there any way of doing this and is it being worked on?

ALSO i remember back with the Dreamcast how i could put tons of emulators to a disk but as i remember with the dreamcast it didnt have n64 emulators do n64 or dc emulators work on xbox

first off there isn't a relible or stable Ps2 Emulator to begin with, let alone all the crap somebody would have to deal with porting it over. Same goes for Cube so to answer your question no you can't put a ps2 emulator on an xbox and no you can;t do the same with gamecube.

yea, your first problem would be getting a good emulator for PS2, that doesnt simply have a range of 5 games.........

If an emulator is ever released, chances are that it will get like 1fps max. Just because something is better doesn't automatically make it possible. You will need the power of 4 xbox's to emulate a nexgen system if it is possible.