t_sharonr
If the "graphic" is a powerpoint object (e.g. an autoshape) then you select the object by clicking it.
Then go to the "format" menu and choose "format autoshape"
on the "colors and lines" tab is a slider marked "transparency"
Slide it to 50% for semi see through!
If you want bitmaps to have a semi transparent appearance see
http://www.powerpointbackgrounds.com/powerpointtransparency.htm
Cheers
TAJ Simmons
microsoft powerpoint mvp
awesome - powerpoint backgrounds,
free powerpoint templates, tutorials, hints and tips etc
http://www.powerpointbackgrounds.com