Recently I was given a laptop (no need to be jealous)
A Pentium II 300mhz, 90MB RAM, 12GB HDD
It's big & old & heavy, but it's great for retro games.
so I've gone back to playing :
Battle Chess
Colonization
Constructor
Diablo II Lord Of Destruction
Dune
FFED3D
Geoff Crammond's Formula1
Head Over Heels
Links LS '99
Lone Wolf Books (Project Aon version)
UFO - Enemy Unknown
Ultimate Soccer Manager 2
Alien
If you're going back to some classics, then Dungeon Keeper 2 is a must