Graphics disappear in conversion from Word to PDF; text wrap culprit

Help! I have a big grant application due Monday and I can't get my pictures to show up in the PDF.

I am using Adobe Acrobat 9 Professional and Word 2003. I have a 2 page Word document with 3 graphics that I inserted as pictures with text wrapping to the left of them. They look lovely in the Word document. On converting to PDF, the graphics simply disappear, and the text is reformatted as though they were never there. Yet in the Word document, the graphics remain. If I change the pictures to be in-line with text rather than square, they come out just fine. But I _really_ don't want to lay them out that way. And, darn it, why should it matter to Acrobat??

I have set the default printer to Adobe. I looked at the Adobe distiller log which doesn't obviously seem to report any errors although I don't really know how to read it.

I would really appreciate any advice.

Thanks!