Ok so i downloaded movies and now i cant find them in my library

Question

ok so i downloaded movies and now i cant find them in my library anywhere i can find them in my account under purchaces

Answer 1

Can you give a few more details on what you're seeing and not seeing?
Can you see the songs listed in iTunes?  With the sidebar enabled (CTRL-S in iTunes 11 if you can't see it) do your see your purchased songs listed if you select Purchased under STORE?  Something like this:
If you see a list like this, right-click on one of the songs and select Get Info / Summary tab.  It should show the location of the file containing the song:
(the default location will be C:\Users\user_name\Music\iTunes\iTunes Media\Music\artist_name\album_name).  I'm assuming that you're not seeing this, since anything that's under Purchased should also be in your main library (Music under LIBRARY at the top of the sidebar) and you should be able to copy it into playlists, etc.
If you don't see this, can you find the music files on your computer?  Again, the files should be under C:\Users\user_name\Music\iTunes\iTunes Media\Music\artist_name\album_name if you're following iTunes defaults and allowing it to organize your library.  Even if that's not the case you can run Windows Explorer and search your whole computer, using the name of the song or just *.m4a as the search string.  If you can find the music files but they are not listed in iTunes, you can re-import your songs into iTunes (File > Add file to Library ... or File > Add Folder to Library ...).
If you still can't find them, either in iTunes or on the computer, you may still have two options.  The first would apply if you have the songs on an iPod or iPhone, the second would be to re-download (not re-purchase) from the iTunes store.  You'll find tutorials in these forums for both cases.  At the end of the day, though, you're encountering a problem that would be more readily addressed if you'd been maintaining a regular backup of your iTunes library.