How can I generate text from a RegEx?

Or "How can I RegEx in reverse?"

specifically I want to take a regex such as wks[0-9][0-9][0-9]

and create a list such as wks001,wks002,wks003, etc

I know the easiest way in this example would be to simply increment the number through addition, but say I want it to be even more sophisticated later on such as [0-9abc] I'd like to use a more sophisticated tool.

preferable would be some windows capable scripting tech, such as vbscript/powershell but I'm open to other alternatives. I guess I kind of thought this might be something that is done all the time by random number generators and such and would be a programming staple, but I lack the understanding to phrase it correctly I think.