|Did you install the newest version of Adobe Reader, "X"?|
There is a little known issue that Adobe does not state on their website. I was only able to figure it out by trial and error.
Adobe Reader X will install on a computer running Windows 2000, however...
You are required to have Windows Installer 3.1 installed on your computer, otherwise Reader will throw up an error message during or after the install.
Download the third file titled "WindowsInstaller-KB893803-v2-x86.exe":