Outlook Express Window won't stay put

I am using Outlook Express on Windows 7 Pro service pack 1. The Outlook Express window simply will not stay put. Here's what happens: I size and place the window where I want it. Then I minimize it. When I un-minimize it, it does not restore to the location I placed it in. It keeps the size but not the location. It is the only application on my computer that does that. All others open up and size to their last location. Is there a fix for this? Our IT guy has no idea.