You put your server into the DMZ. That's a setting in the router.
Hope this clears up how in a snap.
Most of us do not want to pay for a static IP. Did you consider researching and using DDNS (see google.)
First of all I am not sure where to post this thread so if there is a better place let me know. On to business.
From my observations I have deduced that I have to IP addresses. I have an external ip address that is the address of my home network and an internal address that tells the network which computer I am.
I am trying to create a home fileserver so I need a static ip address (so I am told). What I am confused a bout is this. Does the static ip address replace my external one for the network or does my computer now have its own ip address separate from the network.
If someone could explain this whole thing to me that would be very helpful. Thanks.