How do I find it in a Gateway DS 400 notebook ?

Is there a different model number on the bottom of the notebook?
Model#.....

There is only a P/N 3501385.

Gateway analyzed the unit and said:

Model DS 400 15" /30GB/CMB/XPH C&C R2
Serial # 0029039659

Thanx, for trying to help

BG

Here is a link to a forum. A poster says the battery is
"You have to take the laptop apart and remove the cmos battery. unless you want to cut a hole in the bottom. but if you do the battery is on the bottom side right under the vent next to the ram cover....
Electronic equipment repair and service manual search discussion :: View topic - schematic for gateway 400SD4 laptop

You can get a cop of the service manual here. It doesn't show the battery, only the top of the board, so I assume the forum post above is correct.
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