win2003 is very good at my opinion, runs very smooth, faster than wunxp, has lots of server features as well(if you need any), as for games though, it runs all the games just the way winxp does, and i didnt hear about any problem with that, but you shouldnt expect the support for games in the future, after all this is server OS, definetly not intended for gaming. btw, dont forget to check out Windows Server 2003 to Workstation Guide.