Im not to sure if I am using Sprintlink but I do use Sprint(nextel) to access the internet. We live in the boonies, no cable out here. House is 125+ years old and I swear the phone lines are original and dial up was worse then S L O W. If it is raining or wet, phone lines are like two tin cans and a ball of string.
Again, not sure if all this is what your asking, but here goes. With Sprint for 59.99 I get internet connection via cell towers. It is unlimited data plan or something. I have the USB device hooked up to a wireless router with the wifes PC hardwired to it. Myself and the two kids have laptops. All four of us can play or do whatever with the one "connection". Speed is not great, but not bad. A heck of alot faster then dial up. The only time we bog down is when someone is connecting to our network, Kid(son) is using ICQ to extreem or Kid(daughter) is downloading/playing/whatever gawd awful music.
We can play 3 UO accounts at the same time with little problems if we threaten kid(daughter).
Hope this helps! Shoot me a PM if you need to.