Does anyone have any Microsoft, Cisco, Sun, or other certifications?

Which test numbers and descriptions (i.e. 070-0210 Windows 2000 Professional Admin, Install, Configure) do you have?

Which ones were easy? Which ones did you have to retake?

I'm about to take these with Microsoft:

Windows 2000 Professional
Windows 2000 Server
Microsoft SQL 7.0 Administration
Microsoft SQL 7.0 Development
Visual Basic 6.0 Desktop
Visual Basic 6.0 Enterprise
... and maybe a couple more if I do ok on practice exams.

Also, where are some free testing sites? www.brainbench.com used to be free, until they got a large enough set of registered users, then they went pay.

Grok