Remote Desktop

For some reason I'm having a great deal of difficulty setting up remote desktop through my router. I forward port 3389 and do all that but yet I still can't access my pc. I have also tried pcanywhere and realvnc and no luck. I have accounts set up. I can access it sitting at home easy enough. I have tried using my internet ip and internal ip and no go. I would like to get this all figured out because I have had many a customer ask if I could set this up for them. I can also sit here with my wireless laptop and can't connect unless I hook it up wired. Give me some ideas here what to look for.

Make sure your router is setup to allow NAT translation (newer ones have a security thing where it doesn't translate incoming connections) -- and the obvious port is redirected to the right box, the firewall on that particular box allows 3389, blah blah.

No setting for NAT in my router.

um ...ok. What are you working with then?

What is the model of your Router?