I haven't fiddled much with portraits myself but I think you can get a quite bit of info from Chris Glenn's website who was previously a ToEE artist (now working for Supervillain studios): http://www.cglenn.com/tools/ToEE_CustomPortraits.zip Also have a try with JHunz's Portrait Wizard and follow his instructions. The application is included in our main mod pack. If you browse ToEE1.dat with an editor or extract it with Zane's extractor you'll see a whole list of portraits and a portrait.mes in the art/interface/PORTRAITS folder.
Thanks Zhuge. A couple of questions for you... Where can I find Zane's extractor? Does it actually extract the portraits themselves, or will I need something else to do that? I think if I extract the portraits, I can figure out how to insert them using the portrait wizard or whatever. I just need to know how to extract them. Thanks!
Zane's extractor: http://www.co8.org/files/tools/toeeextract.rar Unzip the downloaded file with WinRaR and place the files (ToEExtract.exe, ToEExtract.cpp and ToEExtract.h) in the Temple of Elemental Evil directory. Click-drag a data file onto ToEExtract.exe to begin extracting. A new folder bearing the name of the data file you are extracting will be created and all extracted file are located within.