3g iphone as modem

[i pimping]

when i connect to 3g or gprs with iphone is there a way of connecting my laptop to iphone and using it as modem this would be cool when there are isnt any wifi

[ALL DAY]

Yes, there are supposedly going to be official ways to do this when 2.2 comes out and there are currently unofficial ways via Cydia right now.

Do a search here on "tethering" and you'll find what you're looking for.