All fonts are compressed with WinZip, so if you download a font you must decompress it with WinZip. If you have WinZip, you open the zip-file and press the extract-button. Extract the file(s) and then you could install the fonts from the controlpanel as usual.
FontLister will help you get a general view of all your fonts, regardless of whether or not they are installed. You can install and remove fonts from FontLister, and you can print samples of your fonts without installing them. This version adds some bug fixes and makes print previewing easier.