I was able to get MyWi running fine on my 3GS 4.0.1. My girlfriend's internal wireless adapter is broken. To avoid from buying those Wireless USB Network adapters, I would like to Tether. What are the steps to start using the internet when switching ON MyWi for USB?

On MyWi, USB option is ON. I connected the my iphone to her laptop. How do I get the laptop to recognize the USB connection??? By the way, this laptop is fresh. Meaning I reformatted and installed Windows 7.