SQL 2005 Reporting Services - Can''t set default value for multivalue parameter

Help! I am rather new to SQL 2005 Reporting Services and have triedeverything to solve this problem. I am setting up a multivalue parameter and want to enter a default value in the Report Parameters. No matter what I put under Default Value -> Non-queried it still displays blank. If I use the multivalue parameter then I get a list of values: value1, value2, value3, etc. which triggers a select all for the inital report view. I either want to display the first value as the default or force the user to "Select a Value".

Thanks

[721 byte] By [JSCAR] at [2008-1-7]