Ps3 wont work with 3 mobile broadband

Hello,

i have a 3 mobile broadband dongle, i linked it up with my ps3 a while ago and have been playin fine online, last night i had connection issues so i went onto my control panel i messed around, now i cant even obtain and ip address wen tryin to connect to ps3 and i dont know what to do, gettin really frustraid and upset, anybody know what i can do????i ve tried everything i can think of