Need a driver so I can ''extend view'' on 2 external screens on acer aspire 4570/Nvidia GT540M

Need a driver so I can "extend view" on 2 external screens (the current driver can only "clone" view to 2 external screens). My 3 year old benq laptop can "extend" display so I can see/extend view on 2 separeate external screens. My new acer spire 4570 with Nvidia GT540M graphics card can only "clone" the view - and not extend it. Also, it can not save the settings. I have just installed latest drivers from Acer (and I also tried drivers from Nvidia - which won't even install at all). I use windows 7/64-bit. Need someone who can tweak the driver so i can use 2 external screens extended. Please write why you are the right coder for this job.