With 2gigs you shouldnt have much trouble.
First thing I would do is check to see what all is starting when you fire up your PC if Windows is loading a bunch of programs this would casue a slow start.
Another thing would be to scan for viruses and spyware, that could casue a slow boot.
If that isn't this issue you may want to try on stick of RAM at a time to see what happens, possible you have a bad stick.
Of course though if non of that helps someone with more knowledge should be along to offer better advice.