Neb,
go to a computer store and see if they have a "CD repair kit". There are some solutions out there that will remove scratches and not harm the data. Tell them what happened and they'll probably be able to set you up with something.
Hope it works! That sucks. I was going to offer to put the files on my domain and let you download from there, until I read Melusine's post about them being 500 MB...whoa! I can only put 100MB on mine.
Try the CD repair if possible. I know there's some out there.
Wizards & Warriors Veteran
Baldur's Gate Newbie