GeneticsLuke: Sorry, I did post a thread asking about it earlier but mistakenly placed it into the wrong section and there doesn't seem to be an option to change which category (still pretty new to these forums :(.). Only realized it afterward. >_<
tessorb: I tried to add a widescreen mod to bg1 and play it straight, but it's really hard to do so. I also tried removing it, but it glitched up and looked like something you'd find on a bad creepypasta page :P. If you don't mind putting a little bit of work into it, you could try this modding guide by the gog team...
http://www.gog.com/forum/baldurs_gate_series/a_conservative_modders_gui/page1 You've probably already seen this, but it's a really good guide if you have both bg1 and bg2. If you want the interface of bg1, there is a mod floating around out there that does that...
I hope I helped, but I realize this isn't exactly what you were looking for. :)