Hi,
Based on my research, I think you can try configuring overrides with the option “For a specific object of class”:
Using Classes and Groups for Overrides
http://technet.microsoft.com/en-us/library/ff678173.aspx
SCOM 2007: How to override an Active Alert for a specific object
http://bpmi.wordpress.com/2011/01/19/scom-2007-how-to-override-an-active-alert-for-a-specific-object-5/
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Hope this helps.
Thanks.
Nicholas Li - MSFT
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