When I bought BGII, all my discs were working fine. I recently started up the game, and after I clicked on play, a screen came up that said 'no disc in drive, please place disc 2 in drive' or something. I opened the drive and disc 2 was there. There are no scratches on it, I'm certain. I tried several times, same thing each time. The game just won't load. I have no idea what to do. Anyone suggestions would be appreciated

Obvious question but can you 'see' the disk from explorer in windows - sometimes my machine has a hitch and I have to reboot as its 'lost' the drive - chances are that is what has happened. - have you changed the drive letter?