Minimum system requirements will not be known until summer 2006 at the earliest. However, these guidelines provide useful estimates:
512 megabytes (MB) or more of RAM
A dedicated graphics card with DirectX® 9.0 support
A modern, Intel Pentium- or AMD Athlon-based PC.
for more info:
http://www.microsoft.com/presspass/n...taBeta1FS.mspx