FSX Acceleration, PMDG B744X and Vista

Hi there,As you may or may not know Acceleration hits the shops in the UK tomorrow. I have purchased the PMDG 744X which i cannot strongly recommend. In my opinion it is the best add on to ever hit the flight sim community and the soundset is amazing!! Anyway, i'm currently running Windows Vista on my system and was wondering if the community who have FSX Acceleration can please give me an idea of how it performs with the 744X?? Does it have a detrimental effect on the frames??Many Thanks,James