Wrong section, but I'll respond anyway, and please cut the spam, it stops people from helping you.
As far as I can see, your best bet is to either make a batch file to call rundll32 or
http://go.microsoft.com/fwlink/?linkid=23094
Take a look at that.
P.S. I would suggest switching to NSIS, it is a lot more mature and expandable in the installer arena.