Error uninstalling an instance of SQL Server

I am getting the following error while unsinstalling 1
instance of SQL Server on a server that has 3 instances.
Uninstall Failed. A general error occured parsing
validation status from sql.mif.
Another question, Is this the correct way to remove one
instance of SQL without affecting the others.
I ran autorun from the CD and selected an instance to
remove. But, it then says ' removing an entire
installation of SQL Server. '
How can I remove one instance ?
thxI think you can follow this:
http://support.microsoft.com/default.aspx?scid=kb;en-us;290991&Product=sql2k|||I used the search from windows explorer to look at this file with notepad. At the bottom I noticed this...
START GROUP
NAME = "InstallStatus"
ID = 2
CLASS = "MICROSOFT|JOBSTATUS|1.0"
START ATTRIBUTE
NAME = "Status"
ID = 1
ACCESS = READ-ONLY
STORAGE = SPECIFIC
TYPE = STRING(32)
VALUE = "Failed"
END ATTRIBUTE
START ATTRIBUTE
NAME = "Description"
ID = 2
ACCESS = READ-ONLY
STORAGE = SPECIFIC
TYPE = STRING(128)
VALUE = "unInstallShield has detected that 'mmc.exe' is in use. Shut down other applications and launch unInstallShield again."
END ATTRIBUTE
END GROUP
Noting the "mmc.exe is in use" message, I closed all my Computer Management, SQL Enterprise Manager, and anything else that looked like it used MMC.exe. The rerun of my uninstall of my SQL Instance succeeded
From http://www.developmentnow.com/g/118_2004_1_0_0_468670/Error-uninstalling-an-instance-of-SQL-Server.ht
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