Here are my main machines I use everyday.
Not so great, but handle my job pretty well.
(Photos taken using Konica-minolta Maxxum 7D & Sony A300)

	Machines
At work	Custom Built PC (Model:E2007)	CPU Intel Celeron 420 (LGA775,1.6GHz) Mainboard Gigabyte GA-EG31MF-S2 RAM DDR2 2048MB HDD SATA 250GB VGA Leadtek 8400GS OS Windows Vista SP1 Monitor Westinghouse LCM-22w2 Printers Epson PX-G5000 Canon MP610, iP4300 x 2 Shinko CHC-S545 Other WacomCTE-640
	Few days after my warranty expired, my 945GC mainboard died. So, I decided to replace it with a new G31 mainboard. I didn't reinstall Vista, but it seems like it's running fine. Few clicks for Vista reactivation and a new driver CDROM were all I needed.
At home	Custom Built PC (Model:E2003)	CPU Intel Celeron 430 (LGA775,1.80GHz) Mainboard ASRock 4CoreDual-VSTA RAM DDR 1024MB HDD IDE 80GB/250GB VGA Leadtek PX8400GSTDH 256MB OS Windows XP SP3 Monitor iiyama 15NE2-WA Printer Alps MD-1500J Other WacomET-0405U
	I built this PC using leftover parts at my workplace. Good enough for net surfing. Alps MicroDry printer is to make transfer decals for my model trains. Usually my desk is a workbench for my model train projects. Internet is very convenient for researches on train prototypes.
On the road	EM7oneα Sharp S01SHII	CPU Marvell PXA270 520MHz Mainboard - RAM 360MB HD - OS Windows Mobile 6 Classic J Screen WVGA 800x480
	It's a smartphone without the phone :). I use this PDA mainly to listen to MP3 files on the way to work. It can be used as a wireless modem at 3.6Mbps. This carrier also provides free DSL connection service for those who owns these PDAs, which is a big plus.