Vista vs 7 Lighting

Hello all.I have a dual boot computer with Vista on one HD and 7 on the other. FSX and all the add on's are installed on both drives pretty much identical. The NGX runs beautifully on both systems but there is a difference between the cockpit lighting that I would like to resolve if I can.On the 7 drive,if I start to turn up the flood lighting,or the AFDS floods (most any switch on a dimmer) the light comes on bright right away,yet on the Vista drive the lights come on gradually like I would think they should if they are on a dimmer switch. Also, on the 7 drive if I press the "I" key on the keyboard a light comes on in the cockpit,but on the Vista drive I do not have this feature.Is this just a difference between Vista / 7 issue,or could I have done something to alter the way the lights work? If that is the case,where can I look in the files to perhaps compare the two setups? I would prefer them to be like the Vista drive and come on gradually. Not a problem at all,I am just curious.Thanks.Dennis