hxxp://www.microsoft.com/ddk/debugging/symbolpkg.asp#Windows%20symbol%20packages

That is the SP1 RTM symbols just updated

hxxp://download.microsoft.com/download/whistler/SP/SP1/WXP/en-us/xpsp1_en_x86.exe

There is the service pack final itself.

Both from your favorite candyshack.

Snatch