|If you check the wikipedia link, it states "some versions of the E7400 and E7500 (Wolfdale)". According to your link, it states that VT will be added "in a month or so"....the article is dated May '09. And if you click on the link within the article, it states the following:|
"According to Intel, the VT-enhanced versions of the mentioned chips will start being delivered on June 12 and since they'll feature new S-spec and MM numbers they may require a BIOS update (to enable the virtualization tech)"
Did you buy your E7400 after the 12th of June? Even if you did, there's no guarantee that you got the updated verion of the E7400 w/VT. I suggest you have a look at the "S-spec". If it's already installed, you'll have to pull it out & look for the number on the top of the CPU...it has to be SLGW3.