After 1 year working with Windows Vista, i've decided to reinstall my laptop.
At the time of SQL Server 2005 Developer Edition installation, i've receive a warning with the following message:
"Microsoft Internet Information Services (IIS) is either not installed or is disabled. IIS is required by some SQL Server features. Without IIS, some SQL Server features will not be available for installation. To install all SQL Server features, install IIS from Add or Remove Programs in Control Panel or enable the IIS service through the Control Panel if it is already installed, and then run SQL Server Setup again. For a list of features that depend on IIS, see Features Supported by Editions of SQL Server in Books Online."
I've checked, and IIS is already installed. What did i missed???
After some googling i've found this article in Microsft website, that explains what features should be installed prior to a fresh SQL Server 2005 installation.
Notice that IIS is only required if you need to install the Reporting Server Component.