Alright. I got tutu working, but there were problems during installation. 1) There were several files it couldn't find, so during the installation/conversion it skipped them. Not a lot, but about 10% or so were missing. Ok, so that was like a bad omen. 2) The next step is run the tutufix pack, so I did that. There were errors. I couldn't install the core bug fixes because I was missing something called "Marcell.CRE". Strange. I was able to install some of the other fixes though. Swell.
Anyway, after that I went ahead and ran bgmain.exe as you're suppose to do. Ran well. Everything looks and sounds great. Impressive. However, I sincerely doubt the stability of it all considering the earlier problems I had during the installation.
Oh, and apparently I can forget about loading my old saved games from BG ... was hoping I'd be able to.
Don't know why I had those errors during installation. Did everything exactly like I was instructed. Of course, it wasn't completely clear on what versions I was suppose to work with but I used the latest patches. Would've been nice if the readme said exactly.