Remove or delete scripts?

Hi,

I have duplicate entries in my iCal alarm scripts. One used to be located on my desktop (from when I was just starting to play around with scripts) but has since been deleted. The problem is I have since installed another script with the same name. Both are appearing in the drop down menu (Alarm> run script>[script dropdown]). Is there anyway to remove old scripts from this menu?

Any help is greatly appreciated. Thanks!

- a