can't open outlook on.....

[Guest]

random machines in my network. most if not all are running
outlook 2002. the problem seemed to start yesterday after
we were forced to reboot the exchange server after a power
outage. there was just one machine yesterday that we new
about so we reinstalled the os (xp). after doing this the
outlook worked fine. i forgot to mention that prior to the
reinstilation of the os we uninstalled office completely
and reinstalled it. this did not help.

today the problem has popped up in a number of other
computers. i'm pretty sure that it is not the server
because i can set up these users outlook on other machines
and it works. does anyone know of a virus that may cause
this?

thanks