How can I get the Unity Web Player to work?

I have downloaded it many times and run the installation which seems to install properly, however every attempt to play I receive a - load the web player first - type error message. I am using a Windows 7 64bit computer. Please advise. Thank you. Cinnaspice

The web player that we install automatically is for the 32-bit version of Internet Explorer. Please try the 32-bit version:

a) Click on the Start Menu

b) Click on All Programs

c) Look for “Internet Explorer” and click on that. Do not start the ‘Internet Explorer (64-bit)’ link.

d) Visit Unity Real-Time Development Platform | 3D, 2D, VR & AR Engine

==> This page should tell you the version of web player that IE-32bit has.

(Note that there is a 64-bit version of the web player, see Unity 3.4 web player for 64-bit Windows | Unity Blog)