Your advantages:
Security package with virus scanner, AntiAdware, AntiSpyware, AntiDialer, email protection (POP3) and AntiPhishing.
Very easy to install
One click configuration with individual selection between standard and expert configuration
Extremely high performance and detection capacity by using the latest standards (AHeAD technology)
Extremely small program and signature updates make sure that the protection against attackers is always up-to-date
Rootkit protection
Virus check of every file and archive access
Protection of active processes against undesired breakups
Also available as a family license for 3 PCs


you may have problems with the updater. if you do, go here and follow the instructions.

http://forum.avira.com/thread.php?threadid=12073