Just an update if anybody else is interested in it and to say thanks to who helped me. I have bought my monitor and connected to my inspiron 1440 laptop through VGA cable. No problems..... Working great, pictures and text both clea,r colors vibrant and viewing angle hugely improved as compared to native laptop screen. I actually ended up buying Viewsonic VP 2365, because dell 2412 ultra was not available in local market. Thanks for advice.