Do this.
1. Start, then Control Panel
2. Appearance & Themes
3. Look to the left and it should say Fonts on the sidebar thing, click that.
4. Font folder should pop up, drag the font files into that folder and they'll be installed.
5. Make a folder with the fonts so you have a place to put them cause if you delete the fonts they won't work anymore.
I suck at giving instructions but try that.