What this programs does:

Security Tool, otherwise known as SecurityTool, is a rogue anti-spyware program from the same family as System Security. This program is promoted through the use of Trojans and web pop-ups. When this rogue is promoted via a Trojan it will be installed onto your computer without your permission or knowledge. When promoted via web pop-ups, you will be shown a pop-up when browsing the web that states your computer is infected. If you click on the pop-up you will be brought to a page that shows an advertisement that pretends to be a fake online anti-malware scanner. At the end of the advertisement, it will state that there are infections and then prompt you to download and install Security Tool onto your computer.

See link for removal instructions:
click Here

Can't get on your own go to the link below. Probably should strongly consider going there first off.

click Here

definitely suggest you go to the forum zep posted the link to above on his second link and ask for help there. If you need help creating a post there let me know I will help from there. This is one that you will need some help with. You will need to register there then start a post in the Analysis and Malware removal area.