I know that t-mobile USA uses different 3g frequencies than ATT (will edit post later to put in details if u post the differences in frequencies)

However, my question is, why wouldn't one be able to theoretically write code that forces the antena to pick up a different frequency in the 3gs?

Obviously I don't know how this works, but I'm sure someone out there can explain it well.

Has anyone torn apart an iPhone 3gs to see what is inside yet?