Can't find reference to SQLXML in Visual Studio 2005 SSIS Package

I had a project I was working on in Visual Studio 2008, when the requirements changed and now it needs to be done in 2005. I was using SQLXML objects from Micro开发者_运维问答soft.Data.SqlXml, but now when I downgraded I cannot find this in the add reference pop up box.

Does anyone know why this isn't showing up and how I can make it show up? I tried uninstalling and reinstalling SQLXML, and have updated VS2005 to SP3

Thanks

To add references that are not in VS2005 script component add references box, put the assembly you are trying to add a reference to to

C:\Program Files\Microsoft SQL Server\90\SDK\Assemblies

Then when you go to add reference it should appear.