I am going to purchase a Acer Extensa 5420 Laptop from my friend. The laptop is in good condition and used for some 8 months. But the problem here is that he does not has the manual and driver cd of this laptop. And here I am going to install windows vista in it. I can do that. I need the source from which I can download the drivers and the instructions to install windows vista. I had manage windows vista bootable disc. Thanks in advance.