When installing this program i get the question to insert CD1. I use the following switch:

REG ADD %KEY%\15 /V 1 /D "%CDROM%\Software\DotNet\netfx.msi /QB" /f

Anyone has an idea of what's wrong here. I use the redistributable package from MS.

This is the way I did it and it works for me. By looking at yours I would say its because you have it looking for it on the cdrom %cdrom%

REG ADD %KEY%\050 /VE /D ".NET Framework v1.1" /f

REG ADD %KEY%\050 /V 1 /D "%systemdrive%\install\NetFramework\netfx.msi /qb" /f

All my apps are installed of the cdrom drive. In my case it's a dvd but that shouldn't make a difference.

You may need to read this: http://www.msfn.org/board/index.php?showtopic=22518

.NET doesn't like being installed from the CDROM the .msi way. Doing this will fix it: http://greenmachine.msfnhosting.com/IEXPRESS/iexpress.htm