How do I uninstall Quick Time Player 10 from a Mac

I cannot find an article that explains how to uninstall Quick Time Player, version 10, from my Mac Snow Leopard.  I need to install Quick Time 7 in order to install Quick Time Pro 7.  Just moving the program to the Trash did not help.
Thanks.

I need to uninstall quicktime completely. It says that it is open when I try to trash/delete it. There is no other error message. I cannot delete it because it says that it is open. I cannot open it because it has become invisible and will not show up when I try to open it. When I click on the icon it flashes as it should as if it is opening but it does not open. It does not show up on my list of open apps. It may be (and probably is) corrupted but I cannot tell. Either way, I want to completely erase it and re install it. just tell me how.
QT is a structure embedded in the in your platform's operating system. To remove/replace it, you would have to delete/reinstall the entire operating system. On the other hand, the QT 10 Player is an application that provides a graphich interface with the QT structure embedded in your system. It can be removed/replace by simply deleting the QT Player app and reinstalling another copy. This is easily done on Snow Leopard system by simply extracting/installing another copy of the app from you included system discs but an be a real problem under Lion since most people do not keep a a local image of the recovery installation software on their local drive.

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