If you mean that you want to use your bb as a modem so that your laptop can have internet access, then there are a number of ways to do it.
You can sign up with your carrier for tethering and pay them a monthly fee to do it (not sure about Sprint), or you can purchase the app called "Tether" and forgo the monthly fees. (This is not sanctioned by your carrier, but it works great)
Just do a search on crackberry for tether, tethering, and "blackberry as a modem" and you'll get a ton of info.
Posted from my CrackBerry at wapforums.crackberry.com
i wouldn't pay for the sprint tether plan it changes all your min to like 600 and just some crappy crap if i were you i'd click here ----> Tether BlackBerry | BlackBerry Modem | Tether