PPT 2008 - custom timing for fade animation?

Hello, I'm using PPT 2008 on a Mac, and I would like to set the timing of a fade entrance animation (in Custom Animation, not Slide Transition) to something other that the options provided in the pop up menu. The slowest setting offered is "Very Fast", .5 second, which is too slow. The funny thing is, I did it before some time ago, as some of my objects have settings of .25 sec., but I can't find it now. Maybe I was in the previous version then... I hope not. Does anyone know how to enter your own custom timing for a fade entrance in PPT 2008? Thank you in advance!

Hi Meisha,

unfortunately with PPT 2008, you just get drop-down menus that can't be typed in, and no input boxes are offered. .5 sec is the fastest you can go!!