The song im looking for is at the very beginning of the first episode, its playing when they start looking at all of the kids coming back to laguna from their colleges...
the lyrics go something like
"hello hello hello im glad i found you
been away a long long time
the sun will rise and the sun will set tomorrow
and its been around......something...
i've waited for you yesterday, to come on back and say you'll always stay
im coming home to california"
the song starts at 5.15 minutes into the episode
thanks so much to anyone who can help!!