Help! My reports are all gone!

I have Peachtree Premium for Construciton 2007.
Today the program is opening weirdly- the screen is not the normal size when you bring up the program, but this odd rectangle.
My reports are mostly just gone - most of the canned ones are not showing, and almost all of the custom ones are not showing. This is happening in more than one company. I'm on the host machine. (We have a peer to peer winxp network).
What has happened and how can I fix it?
Thanks
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