Hi Xu,
I think this is what you are after. I have converted the LabVIEW 7.1 files to 6.1. In the process i have had to create another dll called xml.llb. You should put this in with your vi.lib folder along with the base.llb. Then should you need to point any of the vi's at these subvi's you can find it easily with the rest of the libraries.
I hope this helps,
LeeM
AE
NIUK