here's mine:
1st: a 'deck' I think it was called (circa 1980). Didn't do much really, the thing I remember the most about it was a matching game.
2nd: IBM XT Clone (8086 with 256K of ram and a 20MB hard drive).
-Upgrades: added 3 1/2 floppy, mouse, bumped it to 640K ram (w00t!) and went from a Monochrome monitor, to a CGA monitor and finally to an EGA monitor (16 sweet colors baby!)
3rd: 80286 with 1 MB of ram and an 80 MB Hard Drive, VGA Monitor. This one lasted me for quite some time w/o ANY upgrades
4th: 486 66 MHz 4 MB of ram (forgot the HDD size), SVGA Monitor
5th: Pentium 133 MHz 32 MB ram (forgot the HDD size) All monitors from here on out are all pretty recent and good unless otherwise noteworthy
6th: Pentium II 400 MHz 128 MB ram, 1 GB HDD (I still have this one laying around)
7th: Pentium III 1 GHz 512 MB ram, 30 GB HDD (still got this one too)
-Upgrades: upgraded video card several times and added more ram (to 1 GB)
8th: Pentium IV 2 GHz 1GB ram, Radeon 9700 Pro video
9th: Pentium IV 3 GHz 1GB ram, Radeon 9800 Pro video
10th: AMD dual core 4600, 2GB ram, nVidia 7800 gtx (256 mb version
not sure why but I feel like I'm missing one in there somewhere...If I am and I've left you out, I'm deeply sorry, it doesn't mean that I don't luv you any more