Originally Posted by GazaIan
Does it say Emergency Calls Only or No Service in the notification bar? Or does it show T-Mobile, and you have no bars?
You are combining numerous issues into one. The SD, radio, and ROM are all separate issues.
I would check the SD card and see if its still good. Second, I would check your APN settings. Some ROMs do not come with them installed and you have to manually input them.
If all else fails, flash a new ROM and try that.