help! outlook 2003 - pst folders file problem

[betty79]

when opening outlook 2003 today a message popped up saying that the "outlook pst file is not a personal folders file"

i had been working in outlook all day, shut the program down and then this message continued to pop up for the rest of the day, after reboots etc all day

i cannot access outlook at all, once this message pops up you can shut the message window down or hit OK and then outlook shuts dow

does anyone know what the issue is here - corrupt pst file perhaps? and how to fix.

my outlook pst file is only 34mb - 2nd week @ work & cannot access VIP info to get my job done, HELP!