Sorry Dave, you can't. This is not supported. The same header image (masthead.jpg) is used by all customers on the server cluster, so I don't think Microsoft's going to want your logo on every instance ; )
You'll need a dedicated partner-hosted CRM 2011 environment for this.
Regards, Neil
Neil Benson, CRM Addict and MVP at Customery Ltd. You can reach me on
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