Using Dynamic DNS with the Belkin F5D7630-4A ?

I've managed to successfully set up a Dynamic DNS service on my own Netgear DG834G and I am now trying to advise a friend (over the Net/Phone btw) how to set up her Belkin F5D7630-4A, but we are struggling !

We've registered her at dynDNS and she has downloaded their software to keep her router's IP address updated, but we are struggling with the port forwarding (Virtual Server on the Belkin) settings as the terminology used seems to be all different from my Netgear

Can anyone advise a step-by-step process of doing this on the Belkin ?

Thanks in advance,
P