Hi proactis,
There is no virtualized/emulated TPM in our virtual platform, and I'm not aware of any way to add one or pass-through a host TPM.
I seem to recall that BitLocker can also store its crypto material on a USB key, although there may be restrictions on whether you can boot from a BitLocker drive in such a manner -- our early-boot USB support is lacking.
Cheers,
--
Darius