I figured out that the WPA-2 setting needed to be shifted to WPA-2/WPA-2 Personal in order to work.
I had my LN52B750 connected wirelessly to a NETGEAR wireless router no problem. I set up a APPLE Airport and connected my MAC and Windows Vista laptop with no issues. When I tried to enter the password when attempting to connect the TV to it I got a message "Due to the change of WI-FI policy; cannot support the TKIP security type in 802.11n mode. In that case, check a security setting on the Access Point". Not sure what that means. I went to my MAC to check settings and am not sure where/what to look at or do to get the TV connected.