I don't know if I understand your question right.
If you just want to get the installed fonts, there is a class "InstalledFontCollection" derieved from "FontCollection"
string familyList = "";
InstalledFontCollection installedFontCollection = new InstalledFontCollection();
fontFamilies = installedFontCollection.Families;
int count = fontFamilies.Length;
for (int j = 0; j < count; ++j)
familyName = fontFamilies[j].Name;
familyList = familyList + familyName;
familyList = familyList + ",";
Hope this is what you wanted to know.