Converting PDF files for large format printing

I have several customers that don't /or won't convert the type in their artwork to outlines for large digital prints. Most of the time the are working in some type of "word processing" program, and don't have a clue how to convert text to outlines.

When I try to open their files I get a prompt that {"The font Optima-BlackItalic is missing. Affected text will be displayed using a substitute font.
The font Optima-DemiBoldItalic is missing. Affected text will be displayed using a substitute font."}

Is there a way that you find simple to open PDF files in Illustrator CS2, that I could use to prevent this from occuring?

Any suggestions would be GREATLY appreciated.

 

Caleb,

Thanks that solved this problem.