When programming scripts for Photoshop, you sometimes need to know Photoshop's internal name for a font. That name almost always differs from the name presented in the drop-down list of fonts. For example, the internal name for the Arial font is “ArialMT.”
A simple way to find out the internal name of a font is to create a text layer using the font, then invoking this Show Font Name.jsx script from within Photoshop. When executed, an alert will pop up showing the internal name of the font.
If you don't know how to install a Photoshop jsx file, mimic the install instructions provided on the page for my calendar-building script.