<a href="http://www.winsupersite.com/faq/win2003_r2.asp">Windows super site has some info on Release 2 of win2k3 server</a>. there seems to be a lot on the site too. <a href="http://www.winsupersite.com/reviews/windowsxp_sp2_preview2.asp">the preview of SP2 for winxp</a> has some interesting info.