Personal Shield Pro is a FAKE Antivirus created by hackers. This program spreads throughout the internet and installs itself on victims computer with the use of trojans.
Once installed Personal Shield Pro will set itself to automatically start-up when windows start.
Then it runs a bogus virus scans alerting you that your computer is infected with various viruses, and the only way to remove these viruses is to purchase the full version of Personal Shield Pro. Please understand that this is merely a SCAM to get your money, and the only real threat to your PC is Personal Shield Pro itself. Do not pay for this program, I repeat do not pay for this program.
This program may also hijack your web browser thereby making it difficult for you to surf the web. To completely remove Personal Shield Pro, and to disable the browser hijack follow the instructions below.
Learn more about removing Personal Shield Pro Virus here: http://www.wiki-security.com/wiki/Parasite/PersonalShieldPro