As another option and adding to the 2 previous answers and just covering all options
Have you checked if your Font to read in OL is set to white the same as the background. I have seen this as late as last week in a foreign newsgroup. The OP could not read his mail in Outlook unless it was highlighted because it was invisible to see
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Peter
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"Chris" wrote in message news

Ok, I have an issue that I can not seem to find an answer for. Me and my
wife installed Office Enterprise 2007 on a computer that had Office XP on it.
As far as we can tell the install worked like it should, but we are having
an issue with the Outlook program.
When I start Outlook on my side, it has imported all the contacts that I had
and all the emails that I had received up until the install. I have made
sure that my email account information was correct and it is and I can see it
send and receive like it should, but here is the issue.
When it downloads the emails to my Outlook, they are not visible in the
inbox, even if unread. Items are showing up in the junk box as they are
supposed to, but I can not see any of the new emails in my Inbox, but here is
the kicker,
If I do a search using the All Mail Items option, then I can see the emails
I have received since this past Saturday, when we did the install. This
includes test emails that I have sent, etc.
I have no filters turned on, no catagories, nothing that should prevent the
emails form showing. Please help.