Cognos Finance 7.4

[elbeast]

Hello Everyone,
I'm in the middle of a Windows migration 2003 -> 2008R2 and I wanted to know if there is a list of all the schema extensions that were done by Cognos. I searched on IBM's website and I haven't found the information I need.

Does anyone know if there are any known issues when extending the AD schema to support Windows 2008R2? (/adprep, /forestprep, etc.) Does any type of Cognos utility or patch need to be applied before hand?
I don't plan on upgrading the Cognos boxes, just the DCs (which Cognos is not installed on).
Thanks in advance.

***Apologies if this was the wrong place to post this thread, not sure where else to put it...