Installing Cisco ACS Remote agent v4.2 on Server 2008R2

I am having a heck of a time figuring out if I can install the ACS Remote agent onto my new DC.  The last one was server 2008 standard and I had installed the agent successfully and then had upgraded the server to 2008R2 so the program is working.  I now try to install with the same install package onto the new DC running Server 2008R2, and it gives an error about needing to be Server 2000 or greater ( not recognizing this OS as valid)  
I have asked my friend Google and only found posts from a year ago talking about cisco not supporting server 2008R2 yet.
Anyone have luck setting this up yet? I have submitted a TAC on this but thought I'd throw this question out in the assumtion that someone has also had this problem.  If you have a link to the working installer, that would be most appreciated.  I log into and they only present the two supported versions which offers no full installer and requires 4.2 to be previously installed, and which has a bin installer that reports error mentioned above> ( OS must be at least Server 2000)
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BlakeISSAuthor Commented:
The current version I tried is Remote-Agent-ACSse-win-v4.2.1.15-K9
Update: I ran the installer in compatability mode for server 2008 and it installed.  it is registered in the ACS successfully but would still like to know.
Anyone else try this and have problems?
BlakeISSAuthor Commented:
One Note, I did see in reserching that you can only use two DC entries so this third DC I just successfully registered, is not being used for logging or for authenticating, it is pretty handy to have a third server waiting in the event the primary or secondary die.

BlakeISSAuthor Commented:
TAC came back and did confirm this as a non supported work-around.   Just a heads up.  I'm going to close out this question since it's maintaining the popularity of flatulence in an elevator.

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BlakeISSAuthor Commented:
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