I'm sure that my situation is different from the majority of BB users but I work as a software tester for a company who wish to produce applications for the BlackBerry.
Therefore, I am running apps on the BB that do not exist on the PC.
To run these apps I need an internet connection and everything works fine if I use my GPRS connection but my data usage is going to be pretty heavy if I spend all day sending and receiving data.
If I can use my PC's internet connection then I can potentially save myself some money.
I do understand that what I want to do is back to front to most of you