Adobe 7 upgrade on Vista-1304 Error

Ran a security upgrade on Adobe 7 on a Vista pc, the update was recommended by Adobe, and after required reboot Adobe 7 install failed with "Error 1304, Error writing to C:\Program Files\Adobe\Acrobat\ActiveX\AcroHelper.dll. Verify that you have access to that directory."
 
I've tried copying the AcroIEHelper.dll from the install CD to the ActiveX folder and get an access denied error. I've taken permission of that folder and still get the same access denied message. Adobe 7 now has a partial install in a folder at C:\ProgramFiles...\Adobe which I've tried to delete but cannot. I've taken ownership of the Adobe file and removed the inheritance from the parent folder and set the subfolders to inherit the permission changes. When I try to delete the "Access denied" message is displayed and is associated with the ActiveX folder.
I've even tried unplugging the pc from the network and setting the permissions and the same error message displays.
So, the bottom line is Adobe 7 cannot be deleted or installed. It is not displayed in Add/Remove and the install CD only wants to install, it will not display a remove option because it sees the software as not yet installed.
I've Googled this error and found people who have it but none of the solutions recommended apply to our situation.
Any help would be greatly appreciated as the two pc's that have this issue are in our Training room and needed tomorrow for a class.
Thanks in advance!
MCPTechteamAsked:
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jimbo187Connect With a Mentor Commented:
There are a bunch of install cleaner utitlies (most are not free) a quick search turned up this from Adobe :

http://www.adobe.com/support/contact/cs3clean.html

I'm not sure if that specifically would remove the broken Adobe7 install, or if you have tried it yet already.    I would attempt to remove that Adobe product, and reinstall it. Perhaps try disabling UAC during installation? If you don't know what caused the error in the first place it may just occur again upon reinstall.
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