It is recommended to install the font Bitstream Vera Sans Mono for better readability in the console window and the tables. The font can be downloaded in the package avaialable here: http://ftp.gnome.org/pub/GNOME/sources/ttf-bitstream-vera/1.10/.
On Windows unpack and copy the files to
C:\Windows\Fonts
and they will be used the next time GrmonRCP is started.
On Linux the fonts are usually installed in
/usr/share/fonts/TTF
The fonts can also be available from your distribution. On Debian the package is called ttf-bitstream-vera
Also see http://www.gnome.org/fonts/ and the file RELEASENOTES.TXT in the package.