When trying to install phpwg with MSSQL I get the
following message when trying to "install all
applications" from the setup menu:

"Cannot insert the value NULL into
column 'server_host',
table 'phpgroupware.dbo.phpgw_interserv'; column does
not allow nulls. INSERT fails..."

This problem seem to get solved by by adding to
class.schema_proc.inc.php at line 386 :

else
{
$sFieldSQL .= ' NULL';
}

but still there is a problem by not beeing able to
insert values for autonumbers...:

"Cannot insert explicit value for identity column in
table 'phpgw_applications' when IDENTITY_INSERT is set
to OFF"