My first OS: MS DOS 5
Which was soon upgraded to 6 and then 6.22.
Then there was Windows 3.1 (never got into the workgroups junk)
Then Windows 95, 98,2000, ME, XP...blehbleh...
And only now that I am in college and actually forced to use various flavors of BSD, Solaris, and other *nix OSs do I actually bother to learn them. Though working with all the commands, batch files, and the all mightly memmaker has given me a bit of an edge over the point and click generation (I think technically I am the point and click generation, but whateva)

Regards,
Wizeman