I have been trying to install SQL 2008 express edition on windows 7 64 bits.
i did every thing i found online but still getting the error:
Windows Installer installed the product. Product Name: Microsoft Visual Studio Tools for Applications 2.0 - ENU. Product Version: 9.0.30729. Product Language: 0. Manufacturer: Microsoft Corporation. Installation success or error status: 1603.
The 1603 error is not terribly meaningful, so you need to look for the underlying problem. See:
Was a WATSON file created? If so, check that out as well.
More obscure, perhaps, but some people have reported problems with special characters (|') in the SCSM service account passwords, if you are using that tool.