I have a Windows laptop and a Linux desktop at office, and I had this problem of interoperating between the two machines. That's when I installed a neat utility called Synergy. Now, I can copy some text to the clipboard in the laptop and paste it to my browser running on the desktop.
Then, I discovered yet another nifty feature - when I move my mouse cursor beyond the left edge of the desktop screen, the mouse moves to the laptop (you can configure this for any edge). What's useful is that I can fully use the mouse and the keyboard and do almost anything (yes, alt-tab works) on the laptop, and remember, all this from the keyboard connected to the desktop.
What a thoughtful piece of software.
Tip of the hat to Vikram for telling me about this software.
Update: For those who didn't get it, the title was alluding to the phrase "All your base are belong to us".