the description of the net work:

LOCATION 1: a co-located server at isp.
attached to a switch, a cisco pix 5.15 fire wall also attached to the switch (connects to the internet) . and a router attached to the switch. the router (will) spans the framerelay to the other locations router

location 2: 4 workstations attached to a switch, and a router attached to the switch.
the router (will) connect to the frame relay.to allow he two locations to talk to one another

the question is...

at location 2 the router will do the "listing and talking" between networks, can i use illegal ips for the 4 workstations?

<IMG SRC="smilies/rolleyes.gif" border="0"> this stuff can be confusing....