I am using a cisco 1605R Router, I do not have any documents for it, I need to access one my PCs from outside using an IP address.How can i access the router from one of PCs and how do I program the router to direct the incoming IP (static) to a part...

I am using a cisco 1605R Router.How can I access the router from my PC? and how can I Rout a static IP to my PC?I am using PcAnywhere and need to be able to access my PC from behind the router. (I have a static IP).Appriciate any help.