Setting Up a Home Dev/Testing Environment?

An anonymous reader writes "I'm a Project Manager (hold the remarks) who recently decided that I want/need to get my dev skills more up-to-date, as more projects are looking for their PM's to be hands-on with the development. Looking around my house, I have quite the collection of older (read: real old — it's been a while) PCs — it's pretty much a PC graveyard. Nothing that would really help me set up a nice dev infrastructure for developing web/database apps. So, my questions is as follows: Should I buy a number of cheaper PC's, or should I buy one monster machine and leverage (pick your favorite) virtual machine technology?"http://developers.slashdot.org/slash.../11/21/2014250
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