Linklist submission validation

[DistantD]

I'm looking to add more validation into my linklist and was looking to use a random image with text so that a person would enter this text into one of the fields on the form.

I've seen it used by other linksites but cannot find where this script might be available from.

Rather than coding it all myself, can someone let me know where I could get this from?

Thanks!

DistantD
www.distantdoor.com