Rightsizing PPT for Captivate.

I found Saurav's blog post today on rightsizing your PPT for Captivate, but I'm still having a bit of an issue though. I could not see a way to include screenshots in the reply, so I'm asking a question instead.

I have a custom Captivate slide size, 750 wide by 600 high.  That calculates to 7.81 inches wide x 6.25 inches high. I created a two-slide presentation in PPT to see what happens when I import into Captivate, but now Captivate is telling me the Original PPT project size is 936 x 750.  

I'm not planning on doing a direct import from PPT into Captivate, but I have a few team members who may choose to, so I want to give them a right-size PPT template with which they can do that with little to no image and text degradation.

CHUCK