My Laptop (using now):
2.60GHz Intel Celeron 4 Northwood 0.13 µm (its only got a 128k L2, which is a bit disappointing - if i'd paid another hundred i could have got a slightly more beefy P4, but i didn't)
512MB RAM
30GB HD (most files on network, so doesn't matter)
Integrated Intel 82852 GPU, 64MB on it
XP Pro (this week...)
My Desktop (rarely used, currently upgrading:
1.8 GHz Athlon (i think)
256MB RAM
80GB HD
nVidia GeForce MX 440 GPU
My Desktop's just got a nice new mainboard, so add some RAM, a new CPU, GPU, VDU, and a little S-ATA, and we'll be flying.