1. Epson Equity II - 4 or 8 mhz (turbo button), 640kb of ram, 20mb hard drive. It ran DOS 3.3, and later windows 1.0 (No mouse, and monochrome screen. What a concept...) I learned to program in GW-Basic with this thing, and it was the machine that sparked my interest in computers. It could run some old games, slowly, like flight simulator 2 and a few others. Man, good times, it was awesome. I wish we still had it (it stopped working, so my parents got rid of it). We had it when I was about 6, and got a newer one when I was about 9.
2. Packard-Bell 486 - 66mhz, 4mb ram, 350mb HD. It ran windows 3.11, and later 95 (slowly). I basically started playing games and surfing the net with this one, and programming in HTML and Q-BASIC. I remember giving up on windows for internet use, and using Arachne (DOS based browser) because it was infinetly faster than IE or *what was that old browser, it was the basis for mozilla I believe...*.
We got it when I was 9 or so, and replaced it when I was 11.
3. HP - 800mhz, 128mb stock, upgraded to 384, 30gb hd upgraded to 80. This one I started playing real games with, and really started HTML and graphics work. I stopped with Q-BASIC, which I shouldn't have, I was getting really good there for a while. This box also sparked my interest in hardware when I upgraded the RAM (which didn't go so well, the RAM I bought at first didn't work, so I had to RMA it ). Then I started browsing Newegg.com, and gained quite a bit of knowledge about hardware/etc that way. When I learned what components went together to build a system, and which ones worked with which, I really started liking hardware, and since my parents wanted me to enroll in some classes at the community college, I decided to take one on the A+ cert, and another computer class without a cert, then, later Network+.
As a result, I got a job doing PC repair, which is nice, since I can use my skills there to work.
We still have this one, and probably will for another while (I'm 15 now, and even though I do work, I dont get paid much, and don't work very many hours anymore...). Next one will hopefully be something along these lines:
Athlon 64 3200+ - 1gb corsair XMS - 80gb hd (maybe more) - 9800 pro
It'll take a while to save up for this, especially if I do decide to buy an xbox for halo 2 (I'm leaning in that direction)