You can make fonts available in InDesign by copying the font files into the Fonts folder inside the Adobe® InDesign® CS3 folder on your hard drive. However, fonts in this Fonts folder are available only to InDesign.

For information on installing and activating fonts to be used in all applications, see your system documentation or your font manager documentation.

If two or more fonts are active in InDesign and use the same family name but have different Adobe PostScript names, the fonts are available in InDesign. Duplicate fonts are listed in the menus with their font technologies abbreviated in parentheses. For example, a Helvetica TrueType font appears as “Helvetica (TT),” a Helvetica PostScript Type 1 font appears as “Helvetica (T1),” and a Helvetica OpenType font appears as “Helvetica (OTF).” If two fonts have the same PostScript name and one includes .dfont in its name, the other font is used.