Q:
When I bring up XP Task Manager (Ctrl+Alt+Del) all the tabs are missing. How can I get them back?
A:
Normally you see tabs for Applications, Processes, Performance, Networking, and Users.

So why do the tabs go away and how can you get them back?
Well, what happened is that you probably double clicked the border around the tabs—this puts TM into a compact mode.
To put things back, just double click the top border.

Now you have tabs again!
~ David
David Samuel Thomas