A heads-up re. computer security. Lots of spyware/adware/hijackware are going around right now, and getting worse. These types of pest programs are typically not detected by antivirus software. This is the stuff that generates popups, hijacks the browser to some website, changes the browser's homepage setting, changes the cursor, monitors web activity, logs keystrokes, installs unwanted software, etc. All of this is junk or worse, and usually installs in the background without you knowing about it. You can unknowingly pick up these nasties just by visiting a website.
So, here's the tools needed to defend against this junk:
Firstly, and in any case, run a firewall. For example, ZoneAlarm Pro:
http://www.zonelabs.com/store/content/home.jsp
It has a free version (ZoneAlarm), and a pay version (ZoneAlarm Pro) that has a lot more features (email protection, cookie protection, popup and ad blocker, etc.). ZoneAlarm allows you to control both incoming and outgoing traffic; only traffic you authorize is allowed. With ZoneAlarm, you are notified anytime a program attempts to access the internet (also attempts to access your computer from the internet), so any unwanted program that tries to access the internet is revealed.
When you purchase ZoneAlarm Pro, you can at the same time buy a product called PestPatrol and save $20 on the ZoneAlarmPro/PestPatrol bundle. PestPatrol provides protection against spyware/adware/hijackware/trojans, etc.. It also provides cookie and keylogger protection.
http://www.pestpatrol.com
If using PestPatrol, run it weekly, and also update the pest definitions weekly (there's an update tab for that).
In addition to running PestPatrol and Anti-Virus software, to keep junk off your PC, I recommend installing these: (all freeware; no cost unless you choose to donate)
Spybot Search & Destroy: (scans for and removes pests, and more)
http://www.safer-networking.org/index.php?page=spybotsd
IE-SPYAD: (puts known junk websites on the Internet Explorer restricted zone list via registry key)
http://www.staff.uiuc.edu/~ehowes/resource.htm#IESPYAD
SpywareBlaster: (stops installs of spyware)
http://www.javacoolsoftware.com/spywareblaster.html
SpywareGuard: (compliment to SpywareBlaster; stops spyware installs; constantly monitors)
http://www.wilderssecurity.net/spywareguard.html
The SpywareGuard 2.2 download that you want is the full install that is 1.96 MB. SpywareGuard can be downloaded from these sites:
http://www.softpedia.com/public/cat/10/17/10-17-52.shtml
http://www.itsfree4u.com/antispy.shtml
http://www.download-freeware-shareware.com/System-Utilities.php?Theme=2
Each program has regular updates available, so if you install these, keep them updated to protect against the latest pests.
One warning, PestPatrol and Spybot both change and delete files and parts of the windows registry when you take action on any identified pest or condition, so before deleting anything identified as a pest, be sure you are really deleting a pest and not a needed file or registry item. If you are ever uncertain, once a questionable file or registry item is identified, you can look it up at PestPatrol.com and do a Google search for info. on it to be sure it is a pest before deleting.
Running all of the above, so far I've encountered no system problems, and no adware, spyware, junkware, hijackers, or other nasties.