I had my router start forwarding all requests on port 135 to my computer so I could count them. Up to 40 now.

I'd install the SP1, it has lots of nice stuff in it. Installing all the tons of patches individually probably ends up taking much longer to do than installing them all at once in the SP, unless you've been keeping up with them. First priority is probably installing the patch to block this virus that's going around though. If it doesn't force you to install the SP, just install that patch, probably.

I didn't even know a 64-bit version of Windows existed in a form anyone was currently using.