shortening service, need help

So, I bought a domain today it's a 4 word d o main total 7 including extension and d o t and contain "ad" in the begining. It's a nice d o main

I want to know what script is best, so that it remain spam free as most free scripts don't have any captcha(if there is any let me know). I'm planing to use some c p m network to make money, I don't want people get irritated with ads or is there any other way to make money with it other than adsense.

i can send you the php mysql code for d d p d o t n e t