Another one for the online memory...
Although the readme for BizTalk Server 2004 states "Only install Service Pack 1 (SP 1) on computers already running BizTalk Server 2004", you can in fact install BizTalk Server 2004 Service Pack 1 before you run configframework.exe
So that should say "Only install Service Pack 1 (SP 1) on computers that have BizTalk Server 2004 already installed"
Hmm... why are my blog posts always on installation issues? Oh yeah, maybe it's coz installation is a pain and there's too many fiddly bits to remember!
I'll blog some BizTalk 2006 dev stuff soon!