Before making your own thread make sure to read this entire thread to make sure that you don't request a thread that could be easily found.
You should check the Sythe Runescape Scripts forum. The script you are looking for may not always be on the first page.
Most of the time requesting a script you will be referred to http://villavu.com/
. They have a huge variety of scripts, most of which are very good.
If you have looked everywhere and still cannot find the script you are looking for then go ahead and make a post. Everyone will do the best to help you out in getting one.