ESET NOD32 AV and Smart Security 3.0.669
Antivirus protection is spelled "NOD32." Built on the award-winning ThreatSense® engine, ESET NOD32 Antivirus software proactively detects and eliminates more viruses, trojans, worms, adware, spyware, phishing, rootkits and other Internet threats than any program available.
It's the ideal antivirus for Windows XP, and also runs smoothly on Windows legacy systems, MS-DOS, file servers, mail servers, and more.
No matter what your system, there is no better antivirus protection. ESET NOD32 Antivirus was awarded the "BEST Antivirus Solution" in 2007 and 2008 by AV-Comparatives.