I just bought the new motorola krzr k1 on eBay it was unlocked and could use for tmobile since tmobile does not have this phone yet. Well it works fine except it won't let me download anything I tried to download a ringtone and when I got to it.. it says network not available so I was wondering if I could fix this or if I added the internet would it be fine and let me download? Hope someone can help thanks

You need to get the GPRS settings from t-mobile.
These are the same settings that are need for sending MMS pictures.

Here's how to do it
Follow the instructions for activating picture messeging.