collinsc - From your previous thread I posted the link to the Quick Start for the router Here it is again click here This walks you through the settings, the rest you can get from Strawballs link. (Sorry I didn`t post yesterday - Rugby season has started!)
One of the problems here is that we have had three threads on the go! In one of them you said you had a Voyager 205 ADSL modem - this is not wireless however I believe the WRT54G can be used as a wireless access point when connected to the Voyager using an ethernet cable. click here and go to page 10 which describes the set up.
I`d welcome other forum members comments because I`ve never done this myself.