Connecting to my PC remotely

Hello, I’m trying to connect to my PC remotely but I’m having some difficulty. I know what the IP address is that was given by my ISP, but the cable modem that I have is connected to a router which I put a WEP on, which is what I think is preventing the connection from happening. The router is a wireless netgear…I have turned on remote access on the PC and tested it out with another computer on my network and it worked. So I know it has something to do with the router. Does any one have any suggestions as to what I can do to overcome this hurdle…..I’d really appreciate it, thanks in advance.