Mother, correct me if I'm wrong, but I don't believe it's quite that simple to set up. LimitedSharpen() is not an internal AviSynth filter, so you have to load it somehow. Go to this site: http://forum.doom9.org/showthread.php?s=&threadid=84196&perpage=20&pagenumber=1 and paste the code from the 3rd post into a blank text file and save it with the extension .avsi and put it in Avisynth's plugin directory. You also need something called masktools for LimitedSharpen() to function, so download that and load it in your script like any other external plugin. THEN you can call the LimitedSharpen() function.