Windows 7: Port Forwarding

The other day I installed on a Windows XP SP3 workstation following tool: "Port Forwarder Service 1.0"; this tool runs as a service.
My goal is, if this computer (192.168.0.10) is accessed via a port (2048) this request to forward to another computer (192.168.0.20) to another port (80).
There is only one problem: it doesn't work.
I temporarily disabled the firewall so there is no blocking there.
Configuration is by means of an XML script.
My question is: has anyone experience with that tool or XML scripting syntax?
The XML script is as follows:



<?xml version="1.0"?>
<forwarder>
<listen port="2048">
<forward match="192.168.0.\d*" destination="192.168.0.20" destinationPort="80"/>
</listen>
</forwarder>