RackMounting old pc's and hardware?

Uhmm.. I would probably sell them all, then get an i5 system, or if you really want to recycle, do this:

Get a rack, from 20U to 40U. You can take all the old parts out and then put them in rack cases which fit their form factor. You can also purchase rack shelves and place the laptops there. (or even better, hook up the laptop to a KVM and control the other PCs).

The whole rack philosophy is expensive. I say, go to your local hardware store and buy a wire rack. (Like storage rack). Make sure it has adequate room for the computers you have (in the same cases). Then get a networking switch and cluster the whole thing together.

Right, I feel you Zinosys. I thought maybe there would be a less expensive way to do this. I know I might get lucky and find an old rack on craigslist, but where to get the other parts? To keep the thing cheap?

Otherwise, I'll just keep using the cheapo shelving I have.