using a dual display with an extended desktop in 7 starter

i have an acer aspire one net book model number 532h-2223 nav50 10.1″ display with an intel atom n450 proccesser nm10 chipset @1.66ghz speed with a with a intel graphics media accelerator 3150 graphics driver i belive it is a vga_Intel_8.14.10.2117_Win7x86_AO532h graphics card or that could be the driver i need to be able to run a extended desktop to run a karaoke show with it is there any drivers or software i can install in it to do that with with out replacing the os or the computer any hel would be appericated