Your advantages:

Complete security package with virus scanner, AntiAdware, AntiSpyware, AntiDialer, email protection (POP3), Personal Firewall, AntiSpam and proactive 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
Perfect for game tasks through the “Game mode”
WebGuard to surf and download safely

ESET NOD32 Business Edition v3.0.672 + Fix

With a personal firewall, antispam, and the same antivirus and antispyware protection delivered by ESET NOD32® Antivirus, ESET Smart Security is the most comprehensive defense against Internet threats.
These threats come in many forms. In fact, by the time you finish reading this sentence, approximately 70 new variants of malware—viruses, trojans, worms, rootkits, spyware, and more—will have been released.
But ESET Smart Security will keep you safe. And with the addition of personal firewall software, you can proactively filter content, ensuring customized protection.
ESET Smart Security is a tightly integrated solution designed to protect computers from a range of threats. Built on the award-winning ESET NOD32 Antivirus and its powerful ThreatSense® engine, ESET Smart Security provides antispyware, antispam and customized firewall features to protect you, your family and your business from Internet threats.

BitDefender Total Security 2009 provides comprehensive proactive protection against all Internet security threats, along with system maintenance and backup, without slowing down your PCs.

Anti-VirСЊs + Anti-Spyware + Anti-Spam + Firewall
Providing total protection against viruses, spyware, adware, malware, and SPAM, AVG Internet Security is ideal for home users and small offices. It offers easy- to-install, easy-to-use, comprehensive detection of viruses, spyware, and adware combined with firewall protection against intrusions and hacking

* Antivirus
* Antispyware
* Email scanning
* Antiphishing
* Rootkit detection
* Identity protection
* Web site authentication
......

Norton 360 v2.1.0.5 full (All-in-One security) size: 74.54 Mb