Having read several of the threads, and talking to D-Link support, they say it is not supported. Some customers appear to say you can get it working. My DiR-628 under 64 bit Windows can't see any USB device I plug in.
Update (Dec 29, 2009): With DLINK's help, I installed firmware 1.22 (fw_122NA) then tried to connect my laser printer through the USB port of my DOR-628 and it worked!
Message to D-Link: pls provide info on your website about how to use Shareport under Win 7 - your techs say it is not supported yet, which is not true (and disappointing to hear). Hope this helps others.