How to find the installation log file when SQL install fails during installation of Vista Server?

SQL Server 2005

Browse to C:\Program Files\Microsoft SQL Server\90\Setup Bootstrap\Log\Summary.txt

SQL Server 2008

Browse to C:\Program Files\Microsoft SQL Server\100\Setup Bootstrap\Log\Summary.txt

Search the file using keywords "error" and "failed" to find the nature of any installation problems.

Released for:Schneider Electric Saudi Arabia