Hook up ps3 to internet using sprintsierra 3g

Hello,
I can't seem to figure out how to hook up to the internet on my ps3 using my sprint sierra 3g usb device. When i just plain hook it up to my ps3 it just flashes in the corner that an unknown usb device has successfully hooked up but it wont let me sign on to the internet and i cant find anything about the device anywhere. I dont even know if you can use this to get on the internet with my ps3, or if its only for my laptop, but i would be gracious if anyone could help a brotha out and inform me on what i can do if anything.
Thank you