Connecting 2 networks

For testing purposes, I am trying to connect 2 PC's on different subnets via a Win 2003 server with Routing and Remote Access.

I have the following setup:

PC1 ip: 192.168.254.1 subnet: 255.255.255.0 dgway: 192.168.254.252

Win2003 Server nic1: ip: 192.168.254.250 subnet: 255.255.255.0 dgway:

nic2: ip: 192.168.253.254 subnet: 255.255.255.0 dgway:

PC2 ip: 192.168.253.10 subnet: 255.255.255.0 dgway: 192.168.253.254

On 192.168.254.252 is our Cisco PIX firewall through which we connect to the Internet.

I understand I need to add a static route to the firewall, so I have added:

route inside 192.168.253.0 255.255.255.0 192.168.254.250

I am unable to connect PC1 and PC2 together. I can from PC2 to

It has been suggested to me that I need to allow ICMP redirect packets in the rules on the firewall. However I am unsure with the exact command to use.

Any help or other suggestions would be appreciated.

Martin