OK, thanks for the information,
but I want to make sure I understand:
1) I have to use IIS7 in IIS6 mode.
I checked the Roles installed on my 2008 server and IIS6 management console,metabase compatibility,management compatibility are installed.
When I start this mmc I can only see the server name, but no web site is displayed.
2) on both servers (2008 = IIS 2000 = SQL+IIS5) .net v2.0.50727 is installed.
Should I run aspnet_regiis -i on both machines?