How to connect two PCs with nomachine? What goes where?

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http://askubuntu.com – I I have two PC, both running Ubuntu 11.10. They are running on the same LAN, both are connected via wireless. I usually connect them with the default running Remote desktop Viewer on PC1 and Desktop Sharing on PC2. The connection is so damn slow it is unusable. People will recommend Nomachine for much faster remote desktop, but I cant understand how to configure the connection. If, I want to view the desktop of PC2 with PC1, what do I have to install where. It seems to me that I have to install Nomachine client on PC1, but how do I have to configure PC2 so it can be accessible with PC1. Do I (HowTos)