OK, I don't think I'm gonna be making any further changes to either of my little beasts for the forseeable future, and decided to organise both into one post:
PC1:
CPU: Pentium D 945, 3.4GHz
Mobo: MSI MS-7173
RAM: 2GB DDR2-533
PSU: FSP Blue Storm II 500W
GFX: Onboard ATi Radeon Xpress 200
Sound: Onboard Realtek HDAudio
Speakers: Altec Lansing 2.1
HDD: Hitachi DeskStar T7K250 250GB SATA-II
ODD: LiteOn LH20A1H
ODD: Samsung SH-S182D
ODD: Pioneer DVR-115D (external)
Additional: VIA VT6306 Firewire card
Additional: Sony memory card reader
Printer: Lexmark X3330 All-in-One
Monitor: BenQ FP73G S
Logitech optical mousie
M$ keyboard
PC2 (Dell Dimension E520 with added bits):
CPU: C2D E4300, 1.8GHz
Mobo: Crappy Dell thing
RAM: 2GB DDR2-533
PSU: Dell 250W
GFX: 256MB ATi Radeon X1300PRO
Sound: Onboard SigmaTel STAC9227
HDD: Seagate ST3250820AS 250GB SATA-II
ODD: Optiarc AD-5170S
ODD: Samsung SH-S203N
ODD: LG GSA-E10N (external)
Additional: TEAC memory card reader
Printer: Epson R265
Monitor: LG L1717S
M$ optical mousie
Logitech Multimedia Elite keyboard
Both connected to a Scientific Atlanta 2100 cable modem and Belkin router.