[Phil Buckle]

I also think it works best on a multi computer setup.
Even using Bidule and another interface on my G5 and streaming it back into PT on the same machine just killed my G5 dual 2.7.
There was no point in me doing that.
But the 2 machine thing is a different story.

Remember this in regard to VEP.
You DON"T need an interface.
VEP gives you 32 channels of VI audio streaming back to your main computer via an ethernet cable. Those 32 channels can be brought in on separate channels into PT. (you read correctly)
In fact I think you can take it up to 64 channels but I haven't tried that yet. (I don't need that many channels)
With Bidule you will need another interface or 2 to do this.

If you aren't prepared to dig a little deeper or don't have the time to trouble shoot then perhaps you should be cautious about trying VEP.