Web Access on different server as Apache host

[brendanw74]

Good day

I have a SLES10SP1 server with XEN hosting 3 virtual machines:

VM1) SLES10SP1 with OES2 (Running DHCP, DNS, iFolder 3.6, Apache2)
VM2) SLES10SP1 (GroupWise 7.0.3)
VM3) SLES10SP1 (ZCM10.1)

What I am trying to do (which I cannot get right) is to configure Apache2 in such a way that when it receives a request for my GW WebAccess page from the Internet, Apache2 must forward the request to my 2nd VM hosting GroupWise.

So basically when a user types in

'http://www.mycompany.com/gw/webacc'

Apache2 running on the 1st VM must take this request and forward it to the GroupWise server's IP address (specifically) being http://192.168.1.10/gw/webacc on the 2nd VM.

I have already configured my routers, Firewall appliance, etc.

Just for interests sake, when I log on to the VM running Apache2, launch Firefox and enter the address;

http://ip-address-of-my-groupwise-server/gw/webacc

I hit the WebAccess page immediately.

I assume it is simply a case of editing the 'dhcpd.conf file' located in '/etc' and adding a line.

The question is, what do I fill in there?

Looking forward to any assistance.
Thanks in advance
Brendan Williams