Eh, try using 
Virtual PC 2007.
I've had pretty good luck with it.. as long as the game doesn't require an accelerator, it should be fine.
Component  Virtual machine emulated hardware  
BIOS
 AMI BIOS 
Chipset
 Intel 440BX 
Sound card
 Creative Labs Sound Blaster 16 ISA Plug and Play
Note 
Virtual PC provides support for sound that is compatible with Windows Vistaâ„¢. On virtual machines that run Windows Vista as a guest operating system, SoundBlaster is not available. 
Network adapter (multi-function)
 DEC 21140A 10/100 
Video card
 S3 Trio 32/64 PCI with 8 MB Video RAM 
EDIT: You get to select the amount of RAM available yourself, based on how much you actually have in your system.  (I have 2 GB!  XD )