I used Remote Desktop a lot back with Windows and was wondering if FC2 has this feature?

I know I had to foward port 3389 to that particular pc I wanted to access in my firewall/router.

Can someone tell me how I can access my Linux machine remotely and what port I need to foward for that to work?

There are several ways to do it. Check out VNC.

http://www.tightvnc.com/

Here's what I'd recommend....if you want text, use ssh (I had asked the same question myself a day or two ago), for graphical use VNC. BUT, in order to set up VNC you'll have to do it in text mode. So, I say it's best to have both.

Just go to terminal, type in:

ssh username@host

This is assuming you've set up that server as a host. It will work with the IP too if you haven't set the host yet.

Once there, you can set up vncserver (just type in vncserver and follow the prompts basically).

EDIT: I think VNC has xterm too or something like that.