Since you are connecting only 2 computers .. why dont you use some remote access solutions..
So that you can access the other system from anywhere in the world.. !
You can also Control the other system with your own mouse and keyboard. You can do anthing from accessing / transfering data.. run applications and all. It will be like you are working on the Remote PC itself. You can even shutdown or reboot the PC....
.. Its just my suggestion. I came across 2 products named gotomypc and remotepc.. I tried RemotePC and its working fine with me..
Hope this will work for you.. and economic too.. ha ha ..