Microsoft Office 2003/ Word: Automatically Shut Down

Microsoft office 2003 problem. When starting microsoft word on vista ulitmate, there seems to be a problem. This will automatically shut down, saying there was a problem and is shutting down. The other programs seem fine, Excel, powerpoint, etc. I havent a clue what this could be, has anyone else had this problem.

In the top right corner of microsoft word it will say "Finalizing Installation" and then after you type a couple of sentences it will shut down on its own. This is for a friend of mine, who had microsoft office put on when she bought the laptop of a friend, though she does not have the disk. so i wondered if this is an installation problem. Would this be some sort of copy of microsoft office 2003, that was put on for her She has only found this out now as her son needs to use word for school ( vista ultimate, 64 bit, sp2)