world DEM

Hi,
I've been told there was a world digital elevation model
which name is ETOPO or something like that.
I woul be interested to get some information about it concerning
the resolution, the way it has been computed, its accuracy
and its availibility (is it 'freeware' file, how and where can I get it, ...)

Thank's in advance for answers ( you can send it directly to my e-mail adress)

DELCLAUX Francois

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Phone : (33) 67-61-75-56 Laboratory of Hydrology - ORSTOM
Fax : (33) 67-41-18-06 BP 5045
E-mail: delclaux@orstom.orstom.fr 34032 Montpellier Cedex FRANCE
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