Post your specs

Main System (been planning to upgrade for a while, but I'm waiting to see what Intel does with Conroe):

Processor: AMD Athlon XP 2500+
Motherboard: MSI K7N2GM-V
Memory: 2x256MB of cheap Kingston stuff.
Storage: 160GB Maxtor DiamondMax Plus 9, 160GB Seagate 7200.7, no RAID. I also have a 16x BenQ dual-layer DVD burner.
Video Card: 128MB ATi Radeon 9600XT.
Display: 19" Sony/Dell Trinitron
Sound Card: Creative X-Fi XtremeMusic, CMoy amplifier, AKG K501 headphones.
Other parts: Canon CanoScan LiDE50 USB-powered scanner, Canon i560s printer, two Saitek controllers and one XBox 360 wired controller.

Laptop:

Model: Dell Inspiron 6000
Processor: Intel Pentium M 1.5 GHz
Memory: 2x256MB DDR2 SO-DIMMs.
Storage: 40GB 4200RPM Toshiba drive. ;_; It also has a cheap 24x CD burner.
Video Card: 64MB ATi Radeon X300...slow, but still a big jump from the standard Intel graphics chip.
Sound Card: Standard integrated AC97 chip.

Parents' computer (ironically, the first computer that I bought for myself):

Model: Dell Dimension 4100
Processor: Intel Pentium 3 1 GHz
Memory: 2x128MB of Infineon PC133 RAM.
Storage: 20GB 7200RPM Western Digital Caviar.
Video Card: 32MB nVidia GeForce 2 MX.
Display: 17" Samsung/Dell CRT.
Sound Card: Creative Labs Sound Blaster Live! Value

The Oldschool rig (this one drove me nuts for a long time...apparently the motherboard doesn't like it when Windows 98's FDISK utility tries to enable LBA, so eventually I gave up and put Windows 95 on it instead):

Model: Gateway P5-120
Processor: Intel Pentium 120MHz
Memory: 4x12MB of EDO (I think) RAM
Storage: One ultra-noisy 1.5GB Western Digital Caviar, and one 4.3GB Samsung. Right now, it's using a Samsung CD/RW drive because the drive that it came with is too old to read CD/RW media properly! o_o
Video Card: ATi Mach64 with 4MB of VRAM.
Display: Same as the Dell above...using a KVM switch.
Sound Card: Creative Labs Sound Blaster AWE32 is HUEG LIEK XBOX.

Jam it back in, in the dark.