When you open the font family menu for the Type tool in the Photoshop Elements Editor on Windows, no scroll bar appears.
Use any combination of the Up Arrow, Down Arrow, Page Up, Page Down, Home, and End keys on the keyboard to scroll through the list.
Optimize Windows 7 for better performance: http://windows.microsoft.com/en-US/windows7/Optimize-Windows-7-for-better-performance
Optimize Windows Vista for better performance: http://windows.microsoft.com/en-US/windows-vista/Optimize-Windows-Vista-for-better-performance
Windows XP: Optimize your computer's performance: http://www.microsoft.com/windowsxp/using/setup/personalize/performance.mspx