NBC Summary for "West Wing" Episode 19

From NBC:
"THE WEST WING --(8:00PM-9:00PM) --(TV-PG)
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"Transition"
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THE PRESIDENT AND PRESIDENT-ELECT SEE FOREIGN POLICY DIFFERENTLY - Eyebrows are raised when the President-elect places a call to the president of China and offers a different position than that of Bartlet (Martin Sheen). Meanwhile, Josh (Brad Whitford) picks his deputy chief of staff. Also starring Rob Lowe, Janel Moloney, Anna Deavere Smith, Teri Polo."

The owner of the official Rob Lowe fan site posted at Television Without Pity:
"Rob Lowe wrote, in an email message to me:

"Can't talk about the plots but I can tell them that I make only a brief appearance in the final show. My main story is two episodes BEFORE that..... "

It seems this means episodes 19 and 22. The two episodes BEFORE, mean IN-BETWEEN his first and last appearances."