with win2k, there are two or three big areas...
1. Actual computer and hardware troubleshooting and installation methods. 70-210/215
2. Active directory environment, GPO, Users, righs, NTFS etc... 70-218/217
3. Networking, TCP/IP/DNS/DHCP/WINS/RRAS, Certificates, encryption & security... 70-216
and their equivalents XP/2003....
as far as i can tell anyway...
Aftertaf
getting quite good at sorting out Windows problems...
An expert when it comes to crashing Linux distributions (mdk, debian - nothing withstands me)