PowerPoint slides, Excel graphs, or images embedded in Word are acceptable formats. When creating the original file in a Microsoft Office application, follow these general rules to ensure that the initial file is properly prepared:

• Do not use patterned or textured fills in graphics. Instead, use solid fills or percentage screens that can be effectively converted to vector images. Note: A 20% difference in percent screens is most effective for differentiation.
• Artwork placed within any Microsoft Office application must be of an acceptable minimum resolution for print production: 300 dpi for tones, 600–900 dpi for combinations, and 1,000–1,200 dpi for line art.
• When inserting pictures/images into files, select “insert” (not “insert link”) to properly embed the high-resolution image into the Microsoft Office file.
• Use the same font for all figures. Standard fonts include Arial, Helvetica, Times, Symbol, Mathematical Pi, and European Pi.
• Always embed fonts in your documents.
  • From the file menu, select Save As…
  • From the Tools menu, select Save Options..., then check the Embed TrueType Fonts box, and select Embed all characters (best for editing by others). These screen shots are from MS Office 2003 for Windows. If you are using a different version, these boxes will look different, but the instructions above should suffice.