How can I tell if my Dell dsktop will support a new hard drive

The hard drive on my Dell Dimension E510 went bad.

I want to buy a new drive to replace it, and I want to be sure that what I want to buy will work in my machine.

I want to buy a Western Digital drive. I'm not necessarily looking for some huge monster drive. The drive that came with the machine is 80GB. The drives I'm conisdering are for 160GB or more.

How can I be sure the drive I pick will work with my mother board, etc.

Thanks in advance for your help!