no you can not ONLY in guitar hero WORLD TOUR.
yes
It is possible, but I have only seen it on playstation
As you have Guitar Hero 3 on the PS2, you aren't able to get custom songs, however, if you have guitar hero 2, you are able to put the disk (assuming it's a proper copy) and in your computer. Youtube can help with this, but you can use "scorehero". Look that up on google. :)
yes its possible, just copy the songs then boom!
hot to put songs on guitar hero 5
nope, only if modded. that would be the only way
you cant only for ps3
To add custom songs to Guitar Hero: Aerosmith on PC, you'll need to use a tool called "Guitar Hero Control" or a similar song editing software. First, download the custom songs in the appropriate format, usually .ogg files for audio. Then, use the software to import the songs into the game, ensuring you follow the specific instructions for creating the necessary chart files. Finally, replace the original song files with your custom ones in the game's directory.
Read Here: http://www.scorehero.com/forum/viewtopic.php?t=53803
On guitar hero one it is "I Love Rock N' Roll"
You don't, unless you hack your GH3 disc on a PC, and add them there.