SQL2008.AdventureWorks install problem

[BobLewiston]

I'm trying to install SQL2008.AdventureWorks_All_Databases.x86.msi, but whether I try to install "Sample Files" or "Create AdventureWorks DBs", I keep getting the following error:

PrepInstance() failed for MSSQL$SQLEXPRESS.
The following features are missing: Full Text Search

I already have installed on my PC:
Microsoft SQL Server 2008
Microsoft SQL Server 2008 Browser
Microsoft SQL Server 2008 Management Objects
Microsoft SQL Server 2008 Native Client
Microsoft SQL Server 2008 Setup Support File (English)
Microsoft SQL Server Compact 3.5 SP1 Design Tools English
Microsoft SQL Server Compact 3.5 English
Microsoft SQL Server Database Publishing Wizard 1.3
Microsoft SQL Server VSS Writer

Any suggestions?

[Old Pedant]

Read the COMMENTS posted by users on that download page. You will see that you probably missed one of the prerequisites for the install and/or the actual SQL Server install. About a quarter of the comments complain about this same thing and another bunch of comments tell how the users fixed it.