Screensaver on HSN

HI.
As you know,HSN has been selling laptop computers,Gateway.
I ordered one. No complaints whatsoever-it looks great and runs even greater!
Only problem is I love that screensaver they have on the computers they were
selling on TV of the clock underwater with the fish,does any1 know where I
can d/l it?
I don't understand why their model computers have the screensaver but the 1
they sent me doesn't.
Thanks in advance,
N.
P.S. I think Windows Vista Home Premium is on this computer.