I'm sorry I have to dig into my notes for the specifics but the SCCM pack Thinkpad offers didnt' quite work and I had to go hunting for a winpe driver.
The version that worked was e1d63x64.
From my cruddy notes it was from "winpe4.0-from intel-ndis63". I think I pulled that off of Intel's website but ndis63 appeared to be the right version.
Also, not sure what OS your loading but Windows 7 requires a BIOS change to the older TPM module. If you don't you'll get an "unknown device" in device manager that will NEVER load.