Change all PowerPoint images to grayscale?

Hi,

I have a PowerPoint 2007 presentation that contains a large number of RGB
images. The journal I'm sending the PowerPoint file to, says that I need to
convert all the images to grayscale. Is there an easy way to change the
images to grayscale?

I've tried Alt-A - Design tab - Colors - Grayscale

but if I save an image out to a graphics program it says that it's still
not grayscale.
I could save each image out to a graphics program, change to grayscale and
import it back in again, but that would be very laborious as there are alot
of images.

Can you help?

Many thanks

You can do this with a macro
See "Make all pictures greyscale"
http://www.pptalchemy.co.uk/powerpoi...rials.html#vba

"StepOne" wrote in message
...
Hi,

I have a PowerPoint 2007 presentation that contains a large number of RGB
images. The journal I'm sending the PowerPoint file to, says that I need
to
convert all the images to grayscale. Is there an easy way to change the
images to grayscale?

I've tried Alt-A - Design tab - Colors - Grayscale

but if I save an image out to a graphics program it says that it's still
not grayscale.
I could save each image out to a graphics program, change to grayscale and
import it back in again, but that would be very laborious as there are
alot
of images.

Can you help?

Many thanks

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signature database 5102 (20100510) __________

The message was checked by ESET Smart Security.

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__________ Information from ESET Smart Security, version of virus signature database 5102 (20100510) __________

The message was checked by ESET Smart Security.

http://www.eset.com