question about remote access

I have a cisco 1720 router that I built that is hooked up to a cable modem that is NOT static.  I know this works with a regular home router and sonicwall firewalls, but I was wondering if there is a way to set up my router so if I were to put my wan ip in remote desktop I could connect to my pc?  By the way there is only 1 pc in the network, and I normall would do vpn but since I cannot get my hands on 12.4 for dyndns and am not willing to pay the extra money for static IP's I would just like to be able to access my pc remotely.
merctkeAsked:
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stuknhawaiiCommented:
You can use dynamic dns on the inside computer (dyndns.com) you can sign up for a free account. Load the software on your inside computer and it will update your dyndns.com account with the WAN IP. For Remote Desktop you type in the hostname you created in your dyndns.com account such as "yourname.dyndns.org" (you'll see what I'm talking about when you create your account) and it resolves to your WAN IP. It works great!
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