So you love Ubuntu, but you're not so happy about fonts on web pages and documents not appearing how they do on every other operating system out there.
Well, that's exactly what we're going to solve today!
Fire up a terminal (Applications > Accessories > Terminal) and type the following (remember don't type the dollar signs at the front!).
$ sudo gedit /etc/apt/sources.list
Make sure these lines:
deb http://archive.ubuntu.com/ubuntu dapper universe
deb-src http://archive.ubuntu.com/ubuntu dapper universe
deb http://archive.ubuntu.com/ubuntu dapper multiverse
deb-src http://archive.ubuntu.com/ubuntu dapper multiverse
Don't have a hash sign (#) in front of them. If they do, remove the hash and save and quit.
Back at our terminal:
$ sudo apt-get update
$ sudo apt-get install msttcorefonts
Then log off, and log back in to enjoy fonts as they were meant to be!