Following on from Phoenix Article this was posted in the comments to his story (Windows 2000 SP3 FTP Folder) by Anonymous. Have no idea but if you wanna see (and download) what's in the 1st service pack for Windows XP take a look at this ftp address:

ftp://hotfix.microsoft.com/winnt/windows_XP/sp1/

MiaKa Rancho*: Thanks. Unfortunately these files will be password protected too I assume...