Professional certification

Network Operating System
Microsoft Certified Professional Trainer (MCT)
Microsoft Certified Professional Systems Engineer (MCSE)
Microsoft Certified Professional + Internet (MCP)
Microsoft Certified Professional Product Specialist (MCP)
Novell Netware Certified
UnixWare Install Course Certification

eMail / GroupWare
Microsoft Exchange Professional (MCP)
Certified Lotus Professional on Lotus Notes/Domino (CLP)
Novell GroupWare Administration Course Certification

Enterprise Management /Security/Network Related
Certified Unicenter Engineer (CUE by CA)
Network Associates Certified Professional (NACP) Total Network
Security (PGP, Firewall, & Cyber Cope)
Intel Certified Engineer
COMPAQ Accreditied Systems Engineer (ASE/Compaq)
Citrix Certified Professional
Vinca Certified Engineer
Authorized ArcServe Technical Resource
Authorized HSM Technical Resource
3Com IP Routing Fundamentals
3Com Access Builder / NETBuilder
3com Telephony Associate (NBX)

WEB
CIW Professional
CIW Associate

Hardware
Compaq Certified Associate
A+ Certified
3com Certified
HP STAR Technical
Advanced NetServer Techincal Training
HP Vectra Training (SPN 050,051,054)
HP LaserJet Basic Hardware Training (SPN 901)
HP Netserver Training (SPN 040)
HP LaserJet 4SI/4SIMX Training (SPN 326
HP LaserJet all 2000(D) Series Training
HP LaserJet all 4000(N) Series Training
HP Laserjet all 5000(N) Series Training
HP Laserjet all 8000(N) Series Training
HP LaserJet III Training
HP LaserJet 5M Training

And more…