How do I clear my computer of junk so I can download a movie on iTunes?

I bought a movie on itunes and every time I try to download it, it says ';the disk you are attempting to use is full';. I have no idea what disk it mean or how to clear it. Help me please!How do I clear my computer of junk so I can download a movie on iTunes?
Every computer has a harddrive which only has so much space on it (measured in KB, MB, GB, etc)





A movie is generally 2GB. To free up space try the following:





1. Delete any old files you aren't using. To do this just look around your computer, right click on them and delete.





2. Download CCLeaner at http://ccleaner.com and install it.





3. Open CCleaner and press Tools. You'll see a list of programs; any program which you aren't using, press Run Uninstaller.





4. Once you've done this, go to Cleaner and then press Analyze. When it finishes analyzing press Run Cleaner.





I do this process monthly and it generally free's up around 5GB of space. More than enough to download your movie!





Hope I was of help,


-Your friendly staff at http://iphoneappreviewer.comHow do I clear my computer of junk so I can download a movie on iTunes?
It's referring to the computer's hard drive, the C drive. Don't delete files that you haven't backed up.