Yes, This is called tethering. The Blackberry desktop software has to be installed on the computer you want to tether too and there is an option in their to use as a modem. Just remember some cell phone companies charge extra for this feature
It depends what type of computer you have.You can use your blackberry as a modem,but not very likely.
Check out the below link. http://mobilewirelessnews.com/2006/10/30/how-to-tether-blackberry-pearl-to-pc-for-use-as-a-modem/
You must change your BlackBerry data plan to one that includes tethering, and this does cost more.
can i use a blackberry 8320 battery in a blackberry 8800
Router will use connecting to modem
if your phone is a blackberry or some other phone that can be used as a modem you should be able to simply turn on the wifi on your phone and your ipod should detect the connection
blackberry storm
NO
You will need to buy a new modem that is designed for your DSL modem. This is due to the fact that the modem is designed to use the dsl signal opposed to the cable modem.
You would need to have a blackberry plan if you wanted to use things like BlackBerry internet and messenger etc.
The BlackBerry Bold should be able to use BlackBerry Messenger (BBM). It's for BlackBerry OS 5 or newer.
Because you use different modes to access it!