Two PC's one monitor

Just looking for suggestions on what brand to buy.

Have two PC's, one monitor, would like to be able to have both PC's running and be able to bounce back and forth using one monitor.

Would be nice to have so that while working on one PC I can be doing something else on the other PC instead of staring at the wall!!

Thanks, I know someone will have the right idea.

Suggest a KVM switch,i.e.: http://www.webopedia.com/TERM/K/KVM_switch.html

Can get them here and other resellers...

Hi :
If you don't wanna spend extra money, you can just simply build a network with the two PC, then using remote desktop. Of course this doesn't seem to be the best way, but it is cheapest way I think.