I've no idea who may already know of this site, but Dudleyville
has a massive list of BG1 bugs and fixpacks to deal with them, along with a nicely formatted online walkthrough that misses no details. There is also a nice spell comparison and breakdown that works for both BG1 and BG2, for those who still wonder how best to counter that enemy mage's defenses and bring him to his knees, using arcane magic.
Just felt like passing this along in case anyone's not seen the site yet. Among other things, I found out there's a Ring of Wizardry hidden in the foliage around the Friendly Arm Inn. Doh. (I don't use TuTu. It's got bugs and I don't want to sacrifice the drive space for it. Besides, I like the look and feel of BG1's engine; it fits the game world of BG1 nicely, IMO.)
Have fun. :-)