ALL the fonts in the font folder for the system are loaded. You have to browse around through ALL the headings and sift to the character that you want(Helvetica etc...). Then keep the Titler open in FCP and click "insert", while both windows are open, the Character Viewer will be "on top".
If you want a special font it must be loaded into fontbook first. Good luck with fontbook.
MacPro Dual Core2Duo 3.0Ghz, ATI 4870, 6GB ram, 4TB SATA Raid that now works in SL, SLeopard 10.6.sumthin', FCPStudio 3, QT 7, Kone LHe