I have a laptop . I have a Desktop.

Sometimes they are right next to each other but when i am transfering Files i have to Switch From one keyboard to the other and back and forth.

Synergy Solved this it lets you use just one keyboard and share it between both not by any hard connection means but over the local Network this is great.  Synergy lets you use one keyboard and mouse across multiple computers. To do so it requires that all the computers are connected to each other via TCP/IP networking. Most systems come with this installed.

its at http://synergy2.sourceforge.net/

Give it a try o yeah read the setup instructions . i forgot to and only made a link from my desktop to my laptop and not the other direction as well. so when i moved my mouse from the desktop on the right it went over to the left on my laptop NEVER to return (till i turned off synergy on the laptop) it was one of those Opps moments