Follow the Windows instructions for installing new fonts, then re-start your machine. TruType fonts work well in Win.
I assumed that was the answer but the fonts aren't importing into my Fonts folder for some reason. Thank you.
If the fonts show up in Word or other software and not in AE then they are not compatible with AE or your font manager is not properly installing the fonts. Without knowing exactly what font you are trying to use and where you got it it's impossible to know which it is. If you can't see the fonts you installed in other apps then I would expect that you have a bad or incompatible font.