Cisco with a Gateway for Load Balancing

[Bavesh]

The Cisco 805 Frame Relay
IP: 192.168.204.7 /24

The Main Part :
ip nat pool JO XXXX XXXX netmask 255.255.255.248
ip nat inside source list 1 pool JO overload
ip route 0.0.0.0 0.0.0.0 192.168.69.201 (MY ISP)
access-list 1 permit 192.168.204.0 0.0.0.255


I want to change this so that i can catch all request made on port 80 and forward it to an internal WEB Cache Server IP: 192.168.204.8 then whatever request not in the webcache to go live on the internet.

I will then alter the access-list 1 permit 192.168.204.8 0.0.0.255

So that only the Web Cache server will have access through the router.
No other users can have access directly to the internet through the rotuer which is the case at present.

Can anyone suggest a solution to redirect all PORT 80 traffic to a Web Cache server and allow only Ip 192.168.204.8 to go through the router.

The Clients connecting to the router have the following connection details :
E.G
IP : 192.168.204.51
Gatewat : 192.168.204.7
DNS : XXXX Dns ISP