Be sure to click all around the Oval Office. Notice five frames on wall
representing all the institutions she attended, but only one contains a
diploma.

You have got to check this site out-somebody has way too much time on
their hands. In addition to the above instructions, I would add:
Click on the door a total of 4 times, each one is different (click on the animals)

Click on globe.
Click on the all the pictures (most have something unique)
Click on "Baby Names"
Click on the "Bridge to Nowhere" on her desk
Click on the drapes
Click on the computer and look carefully at the top line
Click on the 5 frames Sally references below-each has a different
message
Click on the windows
Click on the couch
Last, but not least, answer the phone when it rings!
Basically, when the cursor turns to a hand; you have a 'click' spot

PALIN AS PRESIDENT