I think the motherboard is PcChips M599LMR but am not quite sure. I see the Gold chip labeled PC100/SiS 530.
Thanks for any help!

*edit* I went to the pcchips lottery site and did the advanced survey, and the motherboard that came up is M598MR.
More info:
Program: eSupport.com BIOS Detect v1.2 July 21, 2003
BIOS Date: 07/15/95
BIOS Type: American Megatrends
BIOS ID: 52-0110-001437-00101111-071595-000000-001_V90_8670
OEM Sign-On: Release 01/10/2000S
Chipset: SiS 530 rev 3
Superio: ITE 8661/SiS 6801 rev 6 found at port 279h
CPU Type: -K6™-2/
CPU Speed: 350 Mhz
CPU Max: 300 Mhz
BIOS ROM In Socket: Yes
BIOS ROM Size: 256K
Memory Installed: 384 MB
Memory Maximum: 384 MB