Hi. I just reinstalled both Shadows of Amn and Throne of Bhaal after messing around with the OS of my computer. I went to the BioWare site to patch my game, but I don't know if I'm supposed to install the most recent SoA patch, the most recent ToB patch, or both. Does anyone know?
Also, these patches are compatible with other mods like those at Baldurdash and elsewhere, right?
Since you have ToB installed go straight to the ToB patch.
ToB updates SoA to the latest SoA patch so the ToB patch is all you need and yes it's compatible with all the mods, in fact most if not all suggest you install it first.
A general rule of thumb is to install older mods first, eg. Tashia before Kelsey. There is a sticky thread in Crossroads above where you can get all the useful BG2 mods and links.