Need help with running a Script

i am trying to run a script on scar but i don't know how to use it in runescape. am i supposed to download it and open it, or am i supposed to look for a script and manually copy and paste it in scar?
i downloaded a autofighter and put it in scar it compiles fine and runs fine but it keeps clicking on my moeny then the corner of my screen. i really dont know wat to do so plz help me

 

Drag the crosshair (last button on tet top row) onto the Runescape screen before running the script. Also, post the script if that didn't work.

 

i got it to work, thanks for your help Town =)