Those "bands" you listed will mostly only work in Europe, only one working in the US, giving you limited coverage.
I have the opportunity to get a HTC Touch smartphone that is unlocked. It say that operates on Network: GSM/GPRS/EDGE Tri-band: 900, 1800, 1900. I am an AT&T customer and I live in Mississippi. I want to know if this phone will work for my needs.
I read that the network listed above is for European cell phones, and that they would only work in select areas in America. Thanks for the help, and I don't know much about this kind of thing so any help would be appreciated.