I have just bought a ps2 to ps3 adapter so that I can use my ps2 guitarhero guitars with Rockband 2 on PS3. Several searches have confirmed that they are compatible. The converter has a usb connector at one end with a small back box which then splits into two black female plugs into which the black dongle plug for the ps2 guitar will fit inside. However.
if I use the strum lever on the guitar, the options go up and down ok, so there must be some connection made but when I actually attempt to play the guitar on a song, it won’t register the controller – just the mike/drums which are usb as standard.
Has anybody else had this problem and solved it?