I wanted to share my experience in case it helped anyone else out.
After about 4 hours of working with this I was able to get it working.
You must:
Update to the latested firmware for your router - in this case firmware 1.22 NA
- I had to try the same file twice in order for it to load the firmware
- Also note that it is a good idea to save a copy of your configuration before you do this
Then you can download the newest Sharepoint - in this case Sharepoint MacOS Sharepoint 1.10 6/16/09
- For the Windows 7 (I have dual boot) I used - PC Shareport Utility 1.10 5/12/2009
The windows 7 installer worked perfectly and found my usb hard drive plugged into the router nicely
Mac OSX Installer was not as nice and I was unable to run cosetup. Instead I had to drill the folders down and run the SharePortUtility_10_4 directly, which did work.
So I hope this wasn't a waste of time and can actually help someone and prevent the frustration that I experienced. Add to the post if you have questions.