Hello .... If I purchase the Linksys Router GS105 will I have to change any IPs or any reprogram'g?  I had purchased a DYNEX 4Port Router at Best Buy that worked until I tried to use my wireless connection on my Dell VISTA Laptop and I only had a Local Connection and Not the Internet.

Also, on the connections ... do I connect from the port on 2-wire to any port on the new router?

The AT&T level one support and level two support were useless. They told me to call 2-wire support and 2-wire told me because I was an AT&T U-verse customer they could not support me.