SSIS on Named Instance

Hi All,
Would like to ask on how can I configure SSIS to point on a Named Instance by default
I tried editing config and alter with ServerNameInstanceName
after I started services for the instance name and still didn't work...
You will find the file in: “SQL Sever install dir”90DTSBinn (e.g. crogram FilesMicrosoft SQL Server90DTSBinn)
<?xml version=”1.0″ encoding=”utf-8″?>
<DtsServiceConfigurationxmlns:xsd=”http://www.w3.org/2001/XMLSchema”xmlns:xsi=”http://www.w3.org/2001/XMLSchema-instance”>
<StopExecutingPackagesOnShutdown>true</StopExecutingPackagesOnShutdown>
<TopLevelFolders>
<Folder xsi:type=”SqlServerFolder”>
<Name>MSDB</Name>
<ServerName>ServerNameInstanceName</ServerName>
</Folder>
<Folder xsi:type=”FileSystemFolder”>
<Name>File System</Name>
<StorePath>..Packages</StorePath>
</Folder>
</TopLevelFolders>
</DtsServiceConfiguration>
Is there other way to config SSIS ??
Thanks and Regards,
JHOY