Older Desktops vs. New Computers

So you remember that desktop from 5 years ago? You know, the one sitting in your garage. Maybe buried in a corner. You hate to throw it out since it cost you over $500 bucks back then, but you know how technology is. Too old, too slow, has xp on it, probably infested with viruses last you remember. You doubt you could sell it for $50. Probably donate it to the goodwill someday. Well, I have four of them. The budget ones. And they run like old men on fruit, vegetables, vitamins, and viagra. These young duo core, quadra core, everything more laptops, notebooks, netbooks, ipod, ipad, isupercore or iwhatevercore machines are what my wallet calls service call income. I love my $30 desktops. Reliable, fast, able to do anything. If anyone is interested I'll write a full guide on how you can do it for free or for under $20 if you have missing keyboards, monitors, mice, keyboards, etc.. In return, all I ask is respect for my old guys. No tech blabber, although knowing how to right click is desireable. If just one person wants to know, I'll write it.