Ok Sawdust,
Ive looked up the user guide for your model and it seems simple enough.. (best laid plans and all..) Give this a try..
First you will need the Internal IP that the gateway as assigned the PC using WinMX. To get this information do the following.
Click
Start > Run> type in
cmdThen click
OKA Black box should appear and you should type
ipconfigAnd hit the
Enter Key.
Listed here will be several IPs, make a note of the one listed as '
IP Address' This will be similar to the Gateway Address but the last digits are different. Write this down.
Now close that box and move on to the gateway configuration
Type the IP address of your BPG510’s into the address bar of your web browser.
The default IP address of your BPG510 is
192.168.88.1. Then press the ENTER
key. You will be prompted to enter a password (the default password is admin).
You should now see the your BPG510’s System Information Screen
From the list on the left choose
LAN, This should then give you a submenu located under it and you should see
Port Forwarding listed now, click that.
Now the guide I have is not real specific about this, but you may see a button on the main screen now to '
Add Custom Ports' Or
Add Custom service, or you may just see places where you can
enter your port numbers, Protocol, and IP to LAN. Basically get yourself to where you see this screen that allows you to add information.
Ive provided a screen shot from the manual below.
Remember you will need to do this twice.
6699 - 6699 TCP 192.168.88.?? (Your IP Address you made note of here)
6257 - 6257 UDP 192.168.88.?? (That Same IP Address you made note of here)
Now click the add button to the right of this line as you get this info added.
That should be all you need to do for the modem itself.. as usual make sure your firewalls are configured to allow WinMX also. and that in your WinMX Settings > Incoming TCP = top option and port 6699 & In/Out UDP = top option and port 6257. Then restart WinMX.
Here is the URL to the guide i used
http://www.packet8.net/Documents/710051_1_BPG510_Technical_User_Guide.pdf