Mac Mini Fileserver + Office Woes

Hey all!

So in our office we recently set up a Mac Mini running Lion as our new file sharing device. It's working great for the macs, but not so great for the networked PC's.

When we try to open up Microsoft Word or Excel files on the server it opens up the program, but then just a blank screen. Almost like nothing in Word or Excel is open.

We have got around the problem so far by dragging the files onto our desktops, editing them, then putting them back on the file share.

Is there any more info you would need to help me troubleshoot this issue?

Thanks!

Basttrax