Originally Posted by gfunkdave

If all you want it for is web surfing and playing movies, consider installing Linux. Linux is more parsimonious with system resources, so a lower spec computer will perform noticeably better under Linux. It's also a modern and secure operating system.

If you have no experience with Linux or think it might be too hard core, look at Ubuntu. Ubuntu is a Linux distribution that focuses on ease of use. It "just works".

www.ubuntu.com