Problem with other than standard Windows fonts

I have installed  several extra fonts (in this case: Chevara Normal and Chevara Outline) in Windows. I can type a Word document using this font. Then I convert my Word document into pdf using PDFCreator (latest version). But when I open this pdf with Adobe Reader, all characters have been replaced by small rectangles. Is this a problem in Adobe Reader? But I did not have this problem in the past, when using earlier versions of PDFCreator. Does anyone have a solution?