When you are filling in a form on screen or simply just putting in a user-name and a password its much quicker if you could jump to the next field without picking up the mouse. Have you tried Tab (that’s the key on the left with arrows pointing both ways), it jumps down the page one step at a time. Try it you’ll be amazed at how useful it is, of course all those “clever clogs” who know will say “of course”, but its surprising how few do know.
Now if you follow this link you’ll go straight to the Microsoft site where all these useful keyboard short cuts are listed. http://support.microsoft.com/kb/126449