Intro.: I am going to show you how to install the Mac and windows fonts on Ubuntu 10.04, but I have to give www.howtoforge.net credit because I found this on there and wanted to share this with the Instructables community.
Step 1: Open Firefox
On Ubuntu, Open your Firefox web browser.
Step 2: Type Mac4Lin in the google search box.
Type Mac4Lin in the google search bar, OR go to google.com. Click Search.
Step 3: The Search Results
Click on the search result to the link www.howtoforge.com.
Step 4: Navigate Again.
Navigate to http://www.howtoforge.com/mac4lin_make_linux_look_like_a_mac_p3
Step 5: Open Terminal
Open the Ubuntu Terminal.
Step 6: Type
Type This In Terminal: sudo apt-get install msttcorefonts
Step 7: Enter
Hit your enter key on the keyboard. type y (then enter) for any question that comes up.
Step 8: Restart Ubuntu
Restart Ubuntu and log back in. When you go to use gedit or open office, you can use your new fonts. Thx to sourceforge for help! Thanks for the comments!