Routing Question - How to send default internet traffic to PIX and VPN traffic from router out internet

This is the scenario:

I have a network with Subnet: 192.168.1.0/20 A Cisco 1841 Exists as the default Gateway: 192.168.1.1 Fa0/1, Fa0/2 is 66.43.54.111 A PIX 501 Exists to filter traffic: 192.168.1.254 Inside, 66.43.55.20 Outside

The route so far is 0.0.0.0 0.0.0.0 192.168.1.254, This sends all traffic out through the PIX 501

If I want the router to be able to access the internet, but not through the PIX 501, how would I set this up. The next hop router for

Need a solution since the router already has 0.0.0.0 0.0.0.0

Any help would be greatly appreciated! Thanks.

-Rodney