Unable to open MMC

in Off-Topic
I am running a Windows Server 2003 SP1 DC.
I receive an error message when i try and open any MMC. It says:
MMC cannot open the file C:\WINDOWS\system32\dsa.msc.
This may be because the file does not xist, is not an mmc console, or was created by a later version of mmc. This may also be because you do not have sufficient access rights to the file.
How can i find out the version of mmc? Maybe i need to install R2?
I receive an error message when i try and open any MMC. It says:
MMC cannot open the file C:\WINDOWS\system32\dsa.msc.
This may be because the file does not xist, is not an mmc console, or was created by a later version of mmc. This may also be because you do not have sufficient access rights to the file.
How can i find out the version of mmc? Maybe i need to install R2?
Comments
http://www.microsoft.com/downloads/details.aspx?FamilyID=C16AE515-C8F4-47EF-A1E4-A8DCBACFF8E3&displaylang=en
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