how can I set up Raswin as a helper app for internet explorer?

[xyzzyx]

I used to have netscape set up to use Raswin (v2.6) as a viewer for .pdb files (and 
others).  Set up was pretty straightforward.

I installed MS internet explorer and I just can't get the darned thing to work (the 
program opens fine, but I never get any image of the molecule).

Does anyone have any idea how to get this to work?  Anyone already done this?

Thanks in advance.

-George