Would changing the radio fix my problem?

[areonic1]

I assume the radio is what controls your signal?

Anyway, this is my problem. Ill have 2 bars while using data connect, for phone as modem thing. But I loose connection alot, my pc will say "limited connectivity" now sometimes when i go look at my phone, nothings wrong with it, few I have went back and saw failed to dial the 777 number for data.

So would changing to a diff radio give mea better signal? I am on 100% roaming, set to force roam, and like 2 miles from an ATT tower with 3G but not close to anything sprint.

I have touch pro
stock rom, unlimited everything plan
using the WMWifi trial for a wireless router/connection control

Thank ya,
Shawn