How to Remove CA eTrust ITM agent 8.1.637?

I'm trying to install Trendmicro Worry Free Client 7.0 on a couple of computers in our office that at one time a while back had CA etrust AV installed on it. I uninstalled the software on the computer manually before installing Trendmicro Client. The Trendmicro client says that the CA eTrust ITM Agent 8.1.637 is still installed and it can't remove it. Now the Trendmicro website says their 7.0 client software can uninstall this product but I guess they are wrong. I found a article on this site that says one user was able to remove all of the CA software and was able to install trendmicro client. Well, I went through that whole motion removing registry entries and I still can't install the trendmicro client because it still says the CA product is still installed. I have been working on this for about 8 hours so far and no luck. I even called CA which claims they sold the product to another company. I called that company and they had no clue on how to uninstall it. So you guys are my last ditch effort. Please Help......
rraymond1130Asked:
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Chris HInfrastructure ManagerCommented:
I had the same issue.  Only way I fixed was with the REVO uninstaller... I hate endorsing products like such, but I was able to remove without purchasing also.
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rraymond1130Author Commented:
Ok, neither one of those suggestions worked for me..
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Chris HInfrastructure ManagerCommented:
I do remember there being an elevated privileges exploit for that exact version of CA.  Wondering if maybe a piece of malware is leveraging/locking the files from being deleted/uninstalled/removed from autorun...  Have you tried using a live boot CD like bit defender to scan and make sure nothing foul is plaguing the machine?
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rraymond1130Author Commented:
I have scanned this machine with several virus scanners and found nothing. Right now I'm working with Trendmicro to find out what they can find in their logs that their program is choking on.
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rraymond1130Author Commented:
Ok after a couple of weeks working with Trendmicro we finally got rid of 2 registry keys that was keeping the program from being installed. I ran through all of the replies here and none of them helped resolve my problem. Here are the 2 registry keys that kept trendmicro agent from installing:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{54056D16-28C6-4673-BC84-77DA7553EF70}

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{107558C8-458B-45EA-A0FE-7CC10D687DB6}
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rraymond1130Author Commented:
I ran through all of the replies here and none of them helped resolve my problem. Here are the 2 registry keys that kept trendmicro agent from installing:
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