In case you have issues on your Windows 2003 concerning VSS, Microsoft has an update rollup available for download to fix certain issues with VSS:
Found this tool on some obscure site (don't even know where anymore). It's the most easy-to-use patcher to remove the TCP/IP simultaneous connections limit in Windows XP.
I've uploaded it on my site because I can't find the download link anymore*.
* If anyone has a problem with me mirroring it here, contact me through regular channels.