The requirements listed for mine are Pentium lll, 700Mhz or higher, memory 128 Mb or greater. Hard disk 5GB or more free space. Enhanced IDE interface. Drive bay 5.25 half-height bay. Power +5v/+12v power socket. OS Windows 98/2000 Professional/ME/XP (Home edition/Professional)
I run mine under XP with AMD 2500+ with 512 MB memory.
Hope that gives an idea.