Im not sure what category this would come under,
Regardless what we want is something exactly like this site:
www(DOT)related-words(DOT)com
Replace (DOT) with .
This looks like its done through Yahoo API.
I guess you just need to integrate something and it would work.
If Google API can product such, than that would be great too!
Please go through the site, Basically what it does is provide Related Keywords for a Keyword phrase.
Please PM with details,
Would like to close this soon if price is reasonable and right programmer is around
Please PM details to be considered.
Thanks