Wireless Security Alarm

I need to connect to my computer at home which is behind a D-Link 624 airplus xtreme G wireless router (the pc is using a wired connection)

Another thing, I want to avoid request sending. I want to be able to access my computer from any other computer i use.

How do i find out the complete ip address which i will type in on any other computer to get me connected to mine?
and
How do i exactly need to configure my computer to automatically allow all the requests?

One last question, is there any other setting of SP2, windows firewall or Zone Alarm Security Suite that i need to configure so that they will allow the connection ?