FirstClass is available for Ubuntu as a Debian Package (deb)

First you need to install a couple of libraries that it makes use of.

Open a terminal (Applications→Accessories→Terminal) and type:

sudo apt-get install libqt-mt

Next you need to download the FirstClass package from FirstClass's web site. Under “Linux” choose the “Debian Intel” package. If you do this from Firefox it will open in the package manager allowing you to install or tell you if any requirements are missing.

If you are using another browser, you may need to do it from the command line:

dpkg -i fcc-8.315-2-Linux-i686.deb

You can now run FirstClass by clicking “Applications→Internet→FirstClass Client”

FirstClass is setup for Konqueror, so if you are using Fireox, open a terminal and type:

vi ~/firstclass/fcapps

Change the lines that read:

# specify URLS by preceeding with a ':' as follows...
#
:nntp:=/usr/bin/konqueror
:http:=/usr/bin/konqueror
:https:=/usr/bin/konqueror
:ftp:=/usr/bin/konqueror
:mailto:=fcc''

To:

<code bash># specify URLS by preceeding with a ':' as follows… # :nntp:=/usr/bin/firefox