Based on this info..
Your W2K machine is your queue, right?
Then 192.168.0.4 is your proxy address for your seticlient, and (standard) port 5517 is the port used to check the stats.
The queue will use port 80 for transport of data, so thats the port your desktop should forward.
If you want to control the times, you have to set the connection times.
I usually do all my connection though the webinterface.
After you have installed the setiqueue, start it with the GUI, set the password and yiu can log in with Admin and the password and control all via the webinterface.
To get it going the best way it to deliver a completed unit to the queue, so it can connect to berkely and start the download of units.
So to get going, try to run the seti client on the server, without any parameter.
When it have downloaded a WU (and you have logged in with your accoint), Press Ctrl+c.
Then call the seti client with the parameter seti.exe -proxy 192.168.0.4:5517
That should start the process..