The How-To Geek has a "Complete Guide to Networking Windows 7 with XP and Vista" which also highlights Windows Home Server as:
…an ultimate setup that creates a centralized location to share files between all systems on your home network, regardless of the operating system…
You can read their guide here.
Microsoft MVP Philip Churchill's MS Windows Home Server Blog is one of the leading sources of breaking news and information, insightful opinion, and great tutorials regarding Windows Home Server. If you're an HP MediaSmart Server owner, this is a can't miss!