Page background layout changed in pdf out from Word2007

using PDFcreator now v099 - but still face an ongoing problem:

when printing a page with a gradient background color out from "MSOffice word2007" , the gradient over the whole page changes into a multiple repeated gradient, showing kind of dark/light waves over the whole pdf page. The rest of the document (=foreground) looks perfect as is in the original word2007 page.

Any ideas to get it rectified?