I work in the Computer Service industry and most of the Viruses and Malware we have been seeing in the store are easily avoided.
The first and most important tip is to make sure that all of your Software / Programs and your operating system are up to date.
This includes.
Windows updates. (Microsoft updates Preferred as they include updates for Office Programs)
Adobe Products ( Flash Player and Acrobat reader)
Java
A properly functioning Anti Virus Program is critical to the continued health of your system. Norton Anti Virus, Webroot Spysweeper with Anti Virus are some of the good anti virus programs available.
Do not spend Extra Money on Internet Security Suites they will only slow your system down.
In Canada the two biggest ISP’s Telus and Shaw both offer Internet Security Solutions that are relatively ineffective and will cause lots of performance issues unless your PC is very fast.
Java Updates
Windows will by default install the updates automatically however Adobe and Java will just inform you that they are available. Do Not ignore these messages, run these updates as soon as possible.
The Hackers /Virus Malware Authors are taking advantage of security flaws in the older versions of Java are probably the biggest source of problems we are currently seeing. One of the reasons for this is that even if there are two or three updates for Java in a month, the program only checks once a month for the updates.
The second Issue is that that they allow you to set the update period to less such as daily or weekly but after Java does install an update, it resets the update period to monthly again.
We recommend that you manually check for updates weekly as well as manually checking for Windows Updates and performing a complete Scan of your hard Drive with your anti-virus software.
How to Check for Java updates manually.
1:The Java Application Panel is located in your control panel.
In Windows XP you may have to select switch to classic view to see the JAVA Icon.

In Windows Vista select Classic View on left panel.

In Windows 7 you need to change the View by: Category to View by: Small Icons Top right of Window.

The Icon you are looking for will look like this.
Windows 7 64bit
In XP and Vista 32 bit.
When you open this you will see the following.
The Second Tab is for updates. It will also tell you when the last update was run. In this case December 6th 2010.
Click the update Now button and it will go out and check for updates. If it finds one you will see the following window open.
When you click on the install button it can take a little while for the Setup Program to Start.
You should close the Java control Panel before continuing the install.
If you notice a small Orange Icon similar to the one displayed on the Java Control Panel in your System tray this means Java has automatically downloaded and update and needs your permission to install it.
If you go into your Add Remove Programs (XP) or Programs and Features (Vista, Windows 7) and notice multiple versions of Java installed please remove all of them by uninstalling them, and then install the latest version from JAVA.com.
If you have more than one listed they are all installed and you can be vulnerable to old security flaws even if the latest version is installed as well.
Adobe Acrobat Reader.
The latest Version is Version 10. If you are running an older version than this you should uninstall the older version and then install the latest version of the adobe reader from www.adobe.com.
The new versions ( 9 or 10) will let you know when an update is available to install.
Adobe Flash Player.
Again Make sure you have the latest version installed from the Adobe web site. It will then let you know when additional updates are needed.

In this continuation of my testing of weblog clients, I am testing the posting ability built into Microsoft word, 2010.
I am currently testing a couple of Different Weblog Clients for use in posting to my blog with the hopes that a better interface than that built into wordpress itself will let me post more often with better formatting and fewer errors.