|s5000 is a generic model number. Look for a label on the backside of the case for the actual model number, s5330jp for example. Post the number & one of us will dig up the system specs.|
If you're convinced the hardware is good, you'll need to come up with an operating system disk. Would you consider Linux? Mint 10 would be a good choice & it's 100% free. It's very "windows-like" but there is a bit of a learning curve. You can actually run it directly from a CD or DVD without installing it. If you like the way it works, then you can go ahead & install it. Otherwise, you're going to somehow come up with a Windows disk. If there's a label on the case with the Windows product key on it, you can use that for the installation. But you'll need to get the correct version of Windows - XP Home, XP Pro, Vista, etc.
Have a look at Mint: