I have HP laptop I would like to change the operation system to Windows to Lynx?

I have HP Laptop runs with vista Ultimate edition, I don't like the program. I am not good on computers have only basic knowledge. My question is can I replace vista program and install Lynx program. The Laptop has built in camera too does it also work too. Do you recommend it. and where can I find lynx free program to download. I heard it is free.