Can't run regedit, taskmanager, or msconfig

[Monica]

>-----Original Message-----
>Every time I try to run regedit, task managetr, or
>msconfig the window appears then disappears within a
>second or so. This all started happening after a
strange
>tftp file showed up during start up. I have run virus
>scan and it finds nothing. Is this another type of
>worm??
>.
>I am having the same problem except I didnt have the
strange tftp file. I want to stop programs from running
at start up.