Q: How do I share an Internet connection from my iPad to my computer?

Yes, if you have that feature set up on your cell account for your iPhone or iPad. See:

http://support.apple.com/kb/HT4517

Regards.

Does this work for iPad2? If so, how?

I recently signed up for FreedomPop.com. http://www.freedompop.com

FreedomPop provides 500meg of free 4g cellular data per month!  You do need to buy their wireless device at $39.  Your machine needs wifi capability. There are ways of getting bonus megs.  One gig of addition data costs $10 per month.  I used about 15megs per hour of lite internet surfing.

When signing up, you need to be careful with your selections.  On some screens, the free option is a small link below the large button.  FreedomPop employs a Pavlovian Dog < Operant conditioning > thing of getting you used to clicking on the large button then they change the large button to a paid add-on.

Once you setup your account, you need to go to your account options screen to turn off automatic paid data download once you exceed your quota.

The performance seems a little slower than my DSL connection.

http://www.freedompop.com/offers.htm?experience=organic.default

http://www.freedompop.com/coverage

Get it before they go broke.

Robert