Font files are some of the most annoying and unwieldy files you will ever have to deal with on a computer, and moving them between computers and operating systems can be an exercise in frustration. Here's some information about the process of moving fonts between Mac OS X and Windows computers.
Copying from the Mac
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Step 1
Connect your USB thumb drive or other removable storage option to your Mac.
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Step 2
Open "Font Book" in your computer's applications folder.
Step 3
Select a font you want to move and click on the "File" menu.
Step 4
Choose "Reveal in Finder."
Step 5
Copy all the fonts in this folder you'd like to move to the USB thumb drive or other storage device.
Step 6
Eject the USB thumb drive or other storage and move to your Windows computer.
Adding Fonts to Windows 7
Step 1
Connect the USB thumb drive or other storage to the Windows computer.
Step 2
Navigate to the font files using the "My Computer" link in the Start Menu.
Step 3
Right-click on each font file and choose "Install."
Adding Fonts to Windows Vista or XP
Step 1
Click the "Start" button in the lower left corner. On Windows Vista, it has a Windows logo, but no "Start" text.
Step 2
Choose "Run."
Step 3
Type, or copy and paste, "C:\Windows\Fonts\" into the "Run" box's text field, then press "OK."
Step 4
Click "Start," click on "My Computer," then open your USB thumb drive or other storage solution.
Step 5
Drag the fonts from the USB thumb drive window into the Fonts directory.