Go to View > Program Options > PDF Export and check your reference device for PDF output.

If you are not using EMF or WMF graphics you can get good results by setting the screen device. Otherwise you need to use a printer driver, which does not have to be the driver for a printer physically connected to your computer.

If you experience any problems with your PDF output they may be caused by proprietary printer drivers. If this happens try installing a standard driver for a common printer like a LaserJet or a DeskJet from the Windows CD. Then select this driver as your reference device in the PDF Export tab. You can also achieve excellent results with the Microsoft XPS Document Writer driver included with Windows 7 and Vista.

If you use rare fonts in your project you should make sure that those fonts are embedded in your PDF file, otherwise they will not be displayed on computers where they are not installed. However, note that this can significantly increase the size of your PDF file (particularly on Windows 7 and Vista!).

By default, Help+Manual automatically embeds all fonts except a list of standard fonts. To check this exclusion list go to Configuration > Publishing Options > Adobe PDF Output > Font Embedding.