Now that your applet works, you must copy the folder containing its code from your disk into your "www" folder on CS bull. Then, make a link from your cs105labs page to the "DisplayApplet.html" file within the "ColorMixer" folder in your "www" folder. Use PageSpinner rather than MetroWerks to make these changes.
As usual, when you are done, be sure to test these links and your applet using "http" style URLs through Navigator rather than simply using the PageSpinner preview mechanism.