The windows update shows inportant update as Microsoft SQL Server 2005 Express Edition Service Pack 3 (KB 955706). when i try to update it gives me error code 42D9. My laptop is Sony VIOA VGN-CR34GN with Windows Vista Business updated to Service Pack 2. CPU C2D T5270(1.40 GHz) RAM 4GB HDD 160. Please advice as windows help also needs help and is completely useless.