linking/talking between two wireless routers

[bruce]

hi...

if i have two computers, each connected to a separate wireless router, can i
configure the computers/wireless routers to allow each computer to
communicate with each other, while making sure that other computers/devices
outside the "network" can't eavesdrop...

i'm considering this because i can't seem to get a wireless card to work
with me dell laptop.

i'm running FC3/FC4 on all systems....

i have two separate wireless routers. a linksys, and an airlink...

pointers/thoughts/etc...

thanks

-bruce