Hi skyhawk,
if you type 'msconfig' in the run box you'll see the system config' box appear on the screen. Click 'startup' and uncheck any programs which you don't want or don't need to start up straight away. (see screenshot).
If you don't already I'd try using a cleaner such Ccleaner Link Removed which is free and great at what it does..
A great guide which has tips on cleaning 7 as well as a whole load of other stuff can be found here: Link Removed (again it's free)