A number of anti-virus vendors have created tools to remove this for you. Here are a few of them:
McAfee Symantec Computer Associtates There are detailed instructions at
http://www.microsoft.com/security/incident/blast.asp on how to protect your computer from this virus. You should make sure to follow these after you get your system clean.
Basically, here is what you should do to get and stay protected:
1. First, turn on the Internet Connection Firewall in Windows XP. Having the firewall activated will protect your computer from this security issue as well as many many others. Even if your computer has already been infected, activating firewall software will help limit the effects of the worm on your computer.
The fine print: If you have multiple machines, you should use the Home network configuration wizard. In the multiple machine case only the Internet facing computer (the computer attached to the Internet directly and not the other computers in the home that sharing the Internet connection) should have the firewall enabled via the instructions below. Please note that the firewall can disable some internet software, services and features. However, if this happens you can selectively correct these issues by adjusting how the firewall works. For the vast majority of users this change will be totally transparent. Your email and browsing experience for example should not be impacted in any way. In some cases you may have to "open a port" for a feature to work. I don't describe how to alter those secondary settings here. If you run servers in your house, etc., then you are technical enough that this message isn't intented for you. If you experience any changes to your internet software, services or features, please call 1-866-PCSAFETY if you can't figure it out or check our web site for more information.
The instructions:
1. Open Network Connections (Click Start, click Control Panel, and then double–click Network Connections.)
2. Click to select the Dial–up, LAN or High–Speed Internet connection that you want to protect.
3. In the task pane on the left, under Network Tasks, click Change settings of this connection.
(Or, within the Network Connections folder, right-click on the connection that you want to protect and then click Properties.)
4. On the Advanced tab, under Internet Connection Firewall, select the Protect my computer and network by limiting or preventing access to this computer from the Internet check box.
If you are not running Windows XP, you will need to install a third-party firewall. Most firewall software for home users is available in free or trial versions. Check the following resources for more information on personal firewalls:
ZoneAlarm Pro (
http://www.zonelabs.com/store/content/catalog/products/zap/zap_details.jsp)
Tiny Personal Firewall (
http://www.tinysoftware.com/home/tiny2?la=EN)
Outpost Firewall (
http://www.agnitum.com/download/outpostfree.html)
Kerio Personal Firewall (
http://www.kerio.com/us/kpf_download.html)
BlackICE PC Protection (
http://blackice.iss.net/product_pc_protection.php)
2. Second, configure AutoUpdate for Windows Update for Windows XP. While your computer is connected to the Internet, the Automatic Updates feature in Windows XP looks for updates and downloads any that are available. By using the scheduled downloads feature, you will automate the essential second step of actually installing the updates once they are downloaded (and not see those pop-up balloon reminders).
1. Open System Properties (Click Start, click Control Panel, click Performance and Maintenance, click the System icon to open the System Properties dialogue box. (If the Performance and Maintenance category is not visible, click Switch to Category View under Control Panel on the left side of the Control Panel window)
2. Click the Automatic Updates tab. If the check box next to Keep my computer up to date is clear, click it to select it.
3. Schedule Regular Installs. On the Automatic Updates tab, under Settings, click Automatically download the updates, and install them on the schedule that I specify. From the lists provided, select a day and time for your computer to install downloaded updates. Be sure to pick a day and time when your computer is usually turned on.
4. Click OK to apply your changes and close the dialog box.
If you are not running Windows XP, you can still use Windows Update. More information on downloading updates can be found at
www.microsoft.com/security 3. Third, use antivirus software and make sure you have the latest updates installed. These software packages can help you deal with attacks of different forms (e.g., email viruses).
· If you already have antivirus software installed, go to your antivirus vendor's Web site to get the latest updates, also known as virus definitions.
· If you do not have antivirus software installed, then you should consider getting it. The following vendors participating in the Microsoft Virus Information Alliance (VIA) offer antivirus products for home users:
Network Associates (
http://us.mcafee.com/root/catalog.asp?catid=av)
Trend Micro (
http://www.trendmicro.com/en/products/desktop/pc-cillin/evaluate/overview.htm)
Symantec (
http://www.symantec.com/product/index_homecomp.html)
BTW, don't think for a second that if Macs were the predominent computer around the world, they wouldn't be target of these attacks.