Thanks Larry.

But the antenna came with the correct end fitting to hook to the Linksys box. But what I'm not sure about is whether by just hooking the WiFi antenna to one of the two antenna posts on the Linksys box I should then start picking up local WiFi sites?

Or do I need something that the antenna plugs into first then that "box" gets plugged into the eithernet in port on the Linksys box?

Because right now the WiFi antenna is hooked to the and we are in sight of a local hot spot but can not get to the internet via the Linksys box.
But we can if we sit on deck with just the WiFi cards in the laptops.
For what it's worth it's a WRT54GS Linksys box.

"No, RG-58 left over from your VHF radio pullout won't work on 2400 Mhz.
Put that out of your mind...."

It never was. :-)