Based on a lot of troubleshooting and trying different things the only solution I found to get my Dell Windows 7 Machine to work with a WUSB300n was going to the Microsoft "Windows Update Catalog" and putting in WUSB300 whereupon it recommended drivers that are older than what comes with new adapters. I removed all vestiges of the old drivers and software and using the Device manager installed the drivers I downloaded from Microsoft and I was able to connect to my WRT150N router.
