Asus WL-330g - Need Help Please

I just got a WL-330g and have NO idea how to set this thing up. The quick
start guide has become a long nightmare for me. I am simply trying to get
this thing set up for use on the road - i.e. plug into a wired ethernet port
so I can connect wirelessly to a network.

I have a Linksys WRT54G set up on my XP Pro PC and running fine. I have
about 4 wireless devices that all connect fine to the router.

Anyway, if anyone is familiar with this device, please give me some help.
Again, all I want to do with it is to make a wired lan wireless so I can
connect via pda, laptop etc. I also want to use WEP each time I connect for
my wireless devices - already set up on home network and want to use the
same settings when on the road.

I'm not sure if I need to use the AP or Ethernet setting, or what.

Any help is much appreciated.