You will want to install ClamTK which is the GUI component of ClamAV.
ClamTK Install files: (Double click and install note: update the ClamAV repository beforehand)
http://sourceforge.net/projects/clamtk/files/
In your case you will want to go with the *.deb file (clamtk_4.28-1_all.deb). You will also want to update the repository for ClamAV (https://launchpad.net/~ubuntu-clamav/+archive/ppa ).
I will also recommend that you install Ubuntu Tweak:
Repository: https://launchpad.net/~tualatrix/+archive/ppa?field.series_filter=lucid
Install File: http://ubuntu-tweak.com/ (Installing via this file, it will setup the repository for updates)
and Ailurus (which will help you out greatly), open terminal and input:
sudo add-apt-repository ppa:ailurus
sudo apt-get update
sudo apt-get install ailurus
To add the repositories you can do it four different ways:
1.Install Ubuntu Tweak via the file and add the repositories through the source editor.
2. Open a terminal and type in:
sudo
/etc/apt/sources.list
e.g. sudo gedit /etc/apt/sources.list
This will open up the gedit, simply add (Ubuntu 10.04):
ClamAV
deb http://ppa.launchpad.net/ubuntu-clamav/ppa/ubuntu lucid main
deb-src http://ppa.launchpad.net/ubuntu-clamav/ppa/ubuntu lucid main
Ubuntu Tweak
deb http://ppa.launchpad.net/tualatrix/ppa/ubuntu lucid main
deb-src http://ppa.launchpad.net/tualatrix/ppa/ubuntu lucid main
Save, close the file, type into the terminal:
sudo apt-get update
sudo apt-get install clamTK
sudo apt-get install ubuntu-tweak
(This will update the repositories, install ClamTK (which will in turn install ClamAV) and install Ubuntu Tweak.
3. Add via software sources:
open the terminal and input:
gksu --desktop /usr/share/applications/software-properties-gtk.desktop /usr/bin/software-properties-gtk
then add:
ClamAV
deb http://ppa.launchpad.net/ubuntu-clamav/ppa/ubuntu lucid main
deb-src http://ppa.launchpad.net/ubuntu-clamav/ppa/ubuntu lucid main
Ubuntu Tweak
deb http://ppa.launchpad.net/tualatrix/ppa/ubuntu lucid main
deb-src http://ppa.launchpad.net/tualatrix/ppa/ubuntu lucid main
Save, close the file, type into the terminal:
sudo apt-get update
sudo apt-get install clamTK
sudo apt-get install ubuntu-tweak
4. Open Synaptic Package Manager > Settings > Repositories >> Other software {tab}
then add:
ClamAV
deb http://ppa.launchpad.net/ubuntu-clamav/ppa/ubuntu lucid main
deb-src http://ppa.launchpad.net/ubuntu-clamav/ppa/ubuntu lucid main
Ubuntu Tweak
deb http://ppa.launchpad.net/tualatrix/ppa/ubuntu lucid main
deb-src http://ppa.launchpad.net/tualatrix/ppa/ubuntu lucid main
close, click on the reload button. The type in the quick search ClamAV and ubuntu tweak. Install ClamTK with the individual install file.
NOTE YOU WILL NEED TO GO TO THE UBUNTU PPA LANCHPAD TO GET THE CORRECT REPOSITORIES, THE ONES I HAVE POSTED ARE NOT COMPLETE DO TO Y!A CUTTING IT OFF.
~~UPDATE~~
Type into a terminal: (This will automatically set things up for you, it is the easiest way)
(ClamAV)
sudo add-apt-repository ppa:ubuntu-clamav/ppa
(Ubuntu Tweak)
sudo add-apt-repository ppa:tualatrix/ppa