lilypond

[Jake Harkins]

i have windows

i have downloaded lilypond already
and opened the Notepad like it says to and 
typed

{ c'4 e' g' } 

and saved it as the "test.ly"
however when i "click on test.ly" nothing happens
except a notepad of the text i typed in 
am i clicking on the wrong test.ly or saving it in the wrong
location (im saving it in desktop as non txt 
i really want lilypond but its not working or showing any
PDF file
(the sample test worked but now i want to creat my own music but can't even 
figure out how to start the program!