Window repair

I have a 1995 Acura Integra RS. My driver's side window will not go all the way up. I had it evaluated by a repair man, and he said that the "spring for the window regulator is missing. That when it was replaced previously, they must not have put the spring on. Therefore, the window will go up, but drops down approximately one inch and will not stay up. Is there any way I can just get a new spring for it and if so, where can I order it from?
Thanks in advance, because the duct tape is just not working anymore.