1) Download LogonStudios (It's Vista version but if you have Windows 7 it works)
For xp users:
2) You can download the FBI file here
Optional 3) The switch user button was annoying me so i downloaded this to remove it (I'm the only one on my computer so i doubt ill miss it)
Start it up, then open it and it'll do the rest
For the users that want their 'switch user' button back download this:Just run the file and it will return your button.