Intel® 915G Express chipset
Intel® Pentium® 4 processor with 800 MHz front side bus and Hyper-Threading
and 1MB L2 cache or Celeron D® processor with 533 MHz front side bus and 256K L2 cache
Intel® Graphics Media Accelerator 900
40, 80, 160 and 250GB 7200RPM Serial ATA (500GB may work)
Broadcom® Gigabit5 570XX Network Connection
Soundmax ADI 198x Integrated Audio Driver
You can install Windows 7 32-bit (x86), W7 will detect most of the above devices, but for the ones it won't, aslong as you have a network connection, window supdate may procide the rest, if not, use the Vista driver.