Big problems with powerpoint

I am creating a small flash teaser that needs to be imported into powerpoint 98 I am using flash 5 and the .swf files work alone ok but as soon as I attempt to put it into powerpoint by import movie from file I get an error of the file is not correct format or quicktime is not installed correctly which it is. I have attempted to insert the swf file via control panel & properties bit I read in a previous thread but that didn’t work either. I have also tried saving as an avi but all i get is a static image.

I am a bit of a newbie on flash but have imported files so many times on a mac what seems to be the problem on this PC??

Any suggestions or have I just got a software problem

Cheers J