Thanks for that information but I really have a very basic knowledge, how would I therefore access port 80 after forwading. If my IP is 250.200.150.100 then to access port 80 would be 250.200.150.100:80 ???
OK, let's say that your camera operating on port 100. You want to access it from anywhere.
In your router, forward all inbound requests on port 80 to your camera's IP address on port 100, and forward all outbound traffic on port 100 to port 80.
As for actually accessing it, I don't really know much about your program configuration. It should allow you to manually enter a port. You may also want to try typing your router's IP address into a web browser to see what happens (because port 80 is default for websites).
If that doesn't work, then don't change the port. For example, if your camera runs on port 100, you just forward all inbound traffic on port 100 to your camera's IP address on port 100.
I have now purchased a video server which is going to be connected directly to my broadband connection. The server has an address 192.168.1.2. I have tried to connect to it via the net using my IP address i.e. 255.200.150.100:192.168.1.2 but this doesn't work! What am I doing wrong? Should I enter 255.200.150.100/192.168.1.2 or is this totally incorrect?