1-Problem:
Visual Studio 2005 -- Error code 1603 for this component means "Fatal error during installation:
example error:
[08/08/07,12:28:44] Microsoft Document Explorer 2005: [2] Error code 1603 for this component means "Fatal error during installation.
solution:
according to my case: i installed previously the Visual studio 2008 and uninstalled it. when i tried to install VS2005 the error 1603 "Fatal error" appeared. i removed all related files of the previous installation using "Add/Remove programs". and then i installed it successfully.
i found alot of other solutions ,it seeems for different-but related problems-, i mentioned them below:
http://support.microsoft.com/kb/834484
http://support.microsoft.com/kb/968749
