Updating BES/removing Exchange

I am trying to upgrade our BlackBerry Enterprise Server from the basic version5.0.0.137 to SP3. I need to remove Exchange Server from the BES Server but it is giving me this message, The component "Microsoft Exchange Forest Preparation" cannot be assigned the action "Remove" because:
-You do not have sufficient permissions in the domain. A Domain Administrator must either re-run "setup/DomainPrep" or create a Recipient Update Service for this domain.
We are now running Exchange 2007 on our Exchange server but I do not want to negatively affect the schema of our active directory.
I need to know what I need to do to remove the Microsoft Exchange from the server so I can upgrade the BES.
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Neptune ITAsked:
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Rob KnightConsultantCommented:
Hi,

Perhaps this might help:

http://support.microsoft.com/kb/833396

Regards,


RobMobility.
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Rob KnightConsultantCommented:
Hi,

Would it not be easier to migrate the BlackBery configuration database to a new server and then install BES 5.0.3 on that using the same configuration database?

You can then remove the BES software from your Exchange Server.

Regards,


RobMobility.
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Neptune ITAuthor Commented:
The BES software is not on our Exchange Server. We have upgraded our Exchange to 2007 but the 2003 tools are still on the BES server and we need to make sure removing them will not affect the schema and disrupt active directory. We also need to find out how Microsoft recommends removing the tools.
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Neptune ITAuthor Commented:
Hey thanks! That article looks like what I need but I do have one other question just to confirm. Do you know if removing this will adversly affect anything concerning active directory?
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