Both Intel DQ35JO and Asus P5E-VM DO support vPro. I looked at the specs for Core 2 Quad 9300 and it does say that it support Intel Vpro Technology as an optional feature. But when i looked at the motherboards supported by this processor, i see DQ35JO but not Asus P5E-VM DO board. Here is the compatibility chart.
For getting a particular bus frequency, you have to have both the processor and the motherboard supporting that FSB. Otherwise, it won't work.