NAT? Two remote clients with same IP addresses

[broow]

We have a Cisco 3030 vpn concentrator.  We have an existing tunnel with a client that has an 192.168.100.xxx private address.  We have another client we need to add an Lan to LAN tunnel with that also has an internal network of 192.168.100.xxx.  What, if any, are the best options to handle both clients without either having to change their internal IP schemes?

[Jitendriya Athavale]

well nat the entire network statically to something else and make your crypto acl from natted to natted

A- site 1 -------------------------------site 2-A

traffic from A to C - translated to D -  on site 1

traffic from A to D - translate to C - on site 2

D-site 1 --------------------------site 2-C

crypto acl D to C                      crypto acl C to D

[broow]

I think I understand.  Could I nat just one side and not the other?

I have included a drawing of the setup.

thanks again.