I have a tv with the ability to connect to a computer and that is what I use. I just bought a new computer but still want to use the programs on the old one. All I want to know if there is just a simple monitor cable that has a split end so I can connect both computers to the same monitor? I do not intend on useing both computer as the same time.
While this doesn't belong in the CPU section, I can answer your question. There is no cable but you want whats called a VGA switch. Its a small box that plugs two or more PCs into it and one monitor. You press a switch and it changes to which ever computer you have on that switch.
But if you want a DVI+USB one it pretty much starts at 80$ and I think most are limited to single-link DVI (resolution limited to 1920x1200) which isn't an issue for most, but still a limitation worth mentioning.