I can help you out here. XP AntiVirus 2008 comes in many flavors such as XP AntiVirus 2009,2010 and 2011. These program are not viruses but rogues. Think of them like a scam. They make you believe you are infected to get you to buy there product. They rarely destroy a pc are not malicious. They really are annoying if anything. Malware writers are always 10 steps ahead of malware defenders. It is impossible to stay on top of the game cause once you find a cure for Xp AntiVirus 2008.............Then they re-write the code and bang.............You get hit with the same thing again but yet now its under a different code. No nativirus will detect everything. No antivirus can protect you 100%. With that said most of the responsibility falls on the user behind the mouse. Follow safe surfing habits you you should never get infected. Go around being click happy then you are will pay the price.
In a nut shell..............Companies like Avast,Symantec,Kaspersky,AVG and Avira have huge teams of people working on cures for the viruses that are known now................Never mind the ones that just came out today. You find a cure and release it. One minutes later there are tons more viruses. Get it?