MS CRM passing parameters in the query string

By default MS CRM 4 doesn't accept passing parameters in the query string, and it gives CRM error message
To enable passing parameters
follow the instructions in this URL
http://blogs.msdn.com/b/rextang/archive/2008/09/24/8962549.aspx

by adding a DWORD registry key under MSCRM named DisableParameterFilter and setting the value to 1