Where do I add transmission fluid on the car? on 1997 Ford Contour

I have a 97' Ford Contour that has been converted to a bi-fuel that can run on either regular unleaded or natural gas. It has a transmission leak; and I bought a product that is suppose to help it. I need to add it to the transmission fluid; but I'm not sure where to add it.

Thanks for the help.

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2 answers 3 comments
I found a TSB on your vehicle and you probably should contact Ford about repairing this properly

http://www.performanceprobe.com/index2.php?redirect=http://www.performanceprobe.com/misc/tsb.php?article=99-24-09
O.K> I really am a rookie. I couldn't see the transmission fluid dipstick. Can you give me an idea of where it's located?

Thanks for the response.
Thanks for the advice
Is this an automatic or manual transmission?
It's an automatic 4 cylinder