Hi NavyBlu..
I went to UW-Whitewater from 97-2001 and still have some people I could probably get in touch with to find your roommies. I don't remember the Zeta Sigma Chi chapter - is that a MCGLO? Of course, you probably don't remember my chapter, either
Anyway, if you want to PM me I can probably pull some strings back at WW and try to find them for you.
Good luck, and always nice to see another Whitewater alum!