Cannot create SSIS projects

When i create a new SSIS project, the system alert will popup a window to show 'Constructor on type 'Microsoft.DataTransformationService.wizards.ETLProjectInitializer' not found'

I met this kind of questions more than 3 time.

Reinstall VS2005?

How should i do?

It sounds like something in the system dll's did not get included or was removed.

Probably the best thing would be to reinstall business intelligence which is a part of the SQL Server install

Re Installing Visual Studio would do nothing due to the fact that SSIS is not associated with Visual Studio 2005 other then through Business Intelligence.