Jimmy, can you setup a new PC forum
Northy, try (from explorer)
tools
internet options
connections (its a tab)
LAN Settings (button near the bottom)
there should be a tick box that sais something like
"automatically detect settings", make sure its ticked.
click ok ok ok etc and make sure you do it on all the PC's.
close internet explorer and restart them, fingers and toes crossed it should "automatically detect settings"
if it doesnt work first time, reboot the PC's and check the changes you made stayed (tools options connections etc again)