Question : Adding a PIX to a network with an ASA already in place.

Currently we have DSL with 6 usable static IP's (49-54).  I'm pretty sure that our Modem has NAT disabled and Our ASA acts as the gateway.  Our DSL Modem/Router gets xxx.215.125.49.  Our ASA Takes xxx.215.125.50 with a global set as xxx.215.125.51 and a static route from xxx.215.125.52 to our SBS server 192.168.xxx.10.

What I want to do is set up our old PIX firewall for a Dev environment separate from our office network.  I want to use one (or both if necessary) of the remaining IPs xxx.215.125.53 and 54 for this and connect it straight to the DSL Modem/Router.  I would like the inside network to be 192.168.10.xxx.  I will probably have more than one computer connected to the Dev environment so they would have to share the 53 (and/or 54) IP.

It would look something like this:
                                   
                                   |-------  ASA ------- Switch -------- Office network
DSL Modem/Router ---|
                                   |------- PIX ------- Switch -------- Dev network

Can someone please help me configure the PIX for this.  Please include the PIX commands too.   Thanks!

Answer : Adding a PIX to a network with an ASA already in place.

and what is it doing now?
Got access yet, or would you like me to look at the config.

I suggest trying a 'show tech' to get the config out without the password etc.
Then it just a matter of xx'ing your public IP, although I mask mine with the router firstly..

command reference here:
http://www.cisco.com/en/US/docs/security/pix/pix63/command/reference/mr.html#wp1032129