More on SQL Server 2005 Errors

I was trying to attach a database this afternoon. What I got was:

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ADDITIONAL INFORMATION:

An exception occurred while executing a Transact-SQL statement or batch. (Microsoft.SqlServer.ConnectionInfo)

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Unable to open the physical file “E:XXX\XXXStaging.mdf”. Operating system error 2: “2(error not found)”. (Microsoft SQL Server, Error: 5120)

For help, click:

When I click I get:

We’re sorry There is no additional information about this issue in the Error and Event Log Messages or Knowledge Base databases at this time. You can use the links in the Support area to determine whether any additional information might be available elsewhere.

Thank you for searching on this message; your search helps us identify those areas for which we need to provide more information.   Currently there are no Microsoft Knowledge Base articles available for this specific error or event message. For information about other support options you can use to find answers online, see http://support.microsoft.com/default.aspx.

This is now getting aggravating!