If you find no other solution, in the past I've used Win32::OLE to tell IE to print the document. If it is set up to print to a file that'll print to a postscript file which you might be able to get Word to import.

Warning: that route is definitely hackish. If someone goes and changes the print preferences, everything will break horribly. (I had reasons to do things this way, but also was very happy when the day came that I could tear up this solution and replace it with a better one.)