i couldnt get the actual PPT(power point) presentations. But i could find PDF (acrobat reader) versions.

http://www.compsoc.man.ac.uk/~veebs/halo.html

And here a HTML version of 1 of them

http://halo.bungie.org/misc/gdc.2002...lk.html?page=2


I havent gotten a chance to really read them yet, So apologys if this is all non-sense.