Erik Simon (ES of TEX) is one of top developers in JoWood
Richard Karsmakers (Cronos of Quartermass Experiment) is now a Teacher of I.T.
Michael Raasch (Daryl of TEX) works as a programmer for a large german bank (although on last talking to him he's now in England)
Stefan Posthume (Digital Insanity of TLB) was working for E.A. in America
Tim Moss (Manikin of TLB) was/is working for what was 989 Studios and is now Sony Interactive in America
David Moss (Spaz of TLB) was working freelance gfx for games and for Argonaut Games until they closed before christmas.
Marc Rosocha (Marc of Gigabyte Crew) has his own company called Eclipse
they did work on Atari Jaguar, PSOne and Nuon (grandson of Jaguar) and now are doing something in mobile phones or something.
Jochen Hippel (Mad Max) was working in accounting or something, nothing in music except for private work. Although I think things might have changed since 2000 when he came to STNICCC2k
I could list all of the Thalion people if you were interested in anyone in particular?