I have the T400 and I can not enable the virtualization on it. How do I enable it?
Enter BIOS by pressing F1 on startup.
Once inn BIOS->Config->CPU-> Intel Virtualization Technology and Intel VT--d feature.
Example BIOS version 7UET86WW(3.16).
Note: Supervisory passwords may inhibit implementation of setting changes
P.S. If you have the Intel GPU and running non equal paired ram setup (i.e. 1 gig + 2 gigs, etc) in Windows 7, then enabling the Vt-d may likely to cause the screen corruption problem to come up or return.