contact form to csv

Hi guys, after playing with wordpress for a short while i figured out most things but this one issue is causing me a slight headache…. It may be that ive completely missed the point but here goes anyway.

I’m trying to set up a contact form that writes the inputted data directly to a CSV file, ive created the form and the php processing script to do just the job and it works perfectly but im not sure how to integrate it into wordpress.

ive searched for form plug-ins but all the ones ive found only enable export to CSV not writing directly to…

if someone could point me in the right direction i would be grateful.

Thanks,
Mark.