The problem for MS is that XP is a good OS and they screwed the pooch with the Vista OS that was supposed to replace it. [When Dell, the biggest OEM manufacturer tells MS it will not upgrade its OS to Vista and keeps the XP option alive for purchasers, says a lot about the Vista OS.] My local small network has six computers; 4 with XP Pro and 2 with Win7 (one with 32-bit and the other with 64-bit)