Port Forwarding in Technicolor TG582n

[#1]

is it possible to do Port Forwarding in  Technicolor TG582n.  I need to set up port forwading for port 8080 where I am running a Tomcat Webservice.
I have got a static IP address on the machine where I am running the webserver.
I have explored the Game & Application Sharing menu but I did not find any option to link the internal IP address to the port.
Please provide some guidance

[#2]

you need to take the option 'Assign a game or application to a local network device' then assign away..

[#3]

This is the 2nd time I am having to post the reply... The earlier one was lost . Hopefully will not raise a duplicate issue.
Thanks for your reply. Could you please give some more details or post a link on how this is done.
This has 2 textboxes
1) Game or Application and
2 ) Device. 
Where should I enter the portnumber and Internal IP address ? Is there a way for providing port Translation ?

[#4]

Alternatievely , Can I use my old DLINK modem instead of the one provided by PLUSNET ?