I've never used Windows Home Server so I'm not the formost expert on the OS, however based on some of the comments from other posts, and some of the links posted here, here it sounds like there are some limitations and compatibly issues. Why not spend a few bucks more and get a fairly stable OS like win 7?
If we were talking big bucks between the two OSs then I might have a different opinion, but in the overall scheme of things $45 isn't that much.