The steps posted above work, with some minor adjustments:
::Copy some file to make slipstream integration successful.
copy "VS2k8WithSP1\Program Files\Microsoft Visual Studio 9.0\Common7\1033*.chm" "VS2k8WithSP1\Program Files\Microsoft Visual Studio 9.0\Common7\IDE\"
I recommend copying the multiple files in the 1033 folder manually. There's only two of them. There seems to be some confusion surrounding the use of asterisks (*) in batch files.
I also recommend copying the following files manually:
::Copy the setup bootstrapper files
copy "VS2k8WithSP1\Program Files\Microsoft Visual Studio 9.0\CSetupMM*.*" "VS2k8WithSP1\Setup"
And for the SQL Publishing Wizard 1.3:
::copy SQL Server Database Publishing Wizard
copy SP1\vs90sp1\SqlPubWizInstaller.exe VS2k8WithSP1\wcu\SqlPub
Visual Studio 2008 setup will tell you at the end of the installation that this component failed to install.
VS70pgui: [2] DepCheck indicates Microsoft SQL Publishing Wizard 1.3 is not installed.
However, upon checking the Event Viewer as well as the Visual Studio setup log, this is not true. All indications say it installed successfully. And the true test of actually using the wizard, works well.
Apart from that, this tutorial works great!
Many thanks to the author(s).