How can I tell if a computer has Service Pack 1 for Visual Studio 2010 Ultimate?
I assume it is by version number, but I don't know what version means what. (The version I am looking at is 10.0.30319.1 RTMRel.)
When you have SP1 installed you'll see instead:
Microsoft Visual Studio 2010
Version 10.0.40219.1 SP1Rel
Microsoft .NET Framework
Version 4.0.30319 SP1Rel
Therefore you are still on RTM (release to market) version, not the SP.