So I have now ghosted my boot partition and all its contents to a 40GB HDD and am working on transferring all my data off the 300GB drive.
But in the meantime I have installed Baldurs Gate II and NeverWinter Nights again. I have also pulled out my old savegames for the both of them. I have even managed to get both of them running in windowed mode on seperate monitors (however a GeForce MX440 on PCI doesn't handle running games at 1024x768 quite as well as I would like :P). The AGP card can get nice high framerates, though the PCI one gets around about 10FPS on NWN. Though that isn't so bad, because I can always play it on the other monitor if I really want to :P.
I have a screenshot of having them both up and running here, but it is a monster picture, so 56k users beware.
Hopefully I will get some time to have a proper look at openAL as SDL_mixer didn't have a few features I was looking for...