To install TrueType on a gnome system, follow these steps:

1. Create a ~/.fonts directory.
2. Copy the TrueType files to your ~/.fonts directory.
3. Verify that the fonts are available to your system with the fc-list command.

Microsoft's TrueType core fonts for Linux are available at this link.

To enable fonts for all users, use the following method:

su -

mkdir -m 755 /usr/X11R6/lib/X11/fonts/TrueType

Method 1:

#cd /usr/X11R6/lib/X11/fonts/TrueType

for i in *
do
j=`echo $i | awk '{print tolower($0)}'`
mv $i $j
done

Method 2:

cd /usr/X11R6/lib/X11/fonts/TrueType

for uppercase in `ls`
do
for lowercase in `ls $uppercase|tr [A-Z] [a-z]`
do
mv $uppercase $lowercase 2>/dev/null
done
done

5. Make sure all font files have 644 permissions.

chmod 644 *.ttf

6. ttmkfdir > fonts.scale

7. mkfontdir

8. Add your TrueType font directory to the xfs configuration file /etc/X11/fs/config.
/usr/sbin/chkfontpath --add `pwd`

9. xset fp rehash

10. service xfs restart

11. Restart the X Window System in order for the new fonts to take effect.