It's like I said in the previous post; either go to the Control Panel, select Fonts and manage them from there, or use TweakUI, which is downloadable from Microsoft. Do a Google search for the download link.
lol, well on windows 98 all you have to do is drag the font, or copy and paste it in the windows\fonts folder. You dont have to edit any registry, im un sure of how XP handles this, and ive never installed fonts on my server OS, only cause theres no need. If you cant find the fonts re download them or use find to find them in your PC.