Can't Uninstall/Install Quicktime...

Basically, I want to uninstall my old version of quicktime. I basically corrupted it (I believe) because it won't open. When I remove the app from my mac, it's no longer there. However, whenever I'm trying to re-install using the official Quicktime 7.6.4 on apple.com - it won't let me. It gives me an error message saying:
"Quicktime can't be installed on this disc. This version of Quicktime 7 can't be installed on the disc because Quicktime X is already present. Please us Software update to install the appropriate version of QuickTime for your mac".
The problem is, when I go to my software update..it doesn't detect that it needs to be updated. So..how am I supposed to fix it? And when I try to open movie files, Quick time isn't even detected as an option (even if I browse). As far as my knowledge..Quicktime is NO LONGER on my mac..yet it insists that it is. I just want to start fresh, I want to be able to re-install it. But it won't let me.
Anyone have any advice for this maddening problem? And just a little more info - (the way i corrupted the file in the first place) - I was trying to install Quicktime Pro 7 and it kept claiming my mac had the newest version. So I removed quicktime completely, and it kept telling me that quicktime (newer version was on my mac, even tho I removed it, even from the Library section) - then I used the Leopard boot up, and used the optional install..and now the file showed back up, but it doesn't have the quicktime logo, (has the application logo) - and it's non responsive. So I deleted that too...but as I said, when I try to install it again from Apple.com..it's a no go.
Message was edited by: BenjaminLinus815

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