Software alternatives

What you’re using, and what you probably should be using:
Microsoft Internet Explorer (MSIE), you should use mozilla firefox instead. Reasons to switch, the internet is not riddled with crap that does havoc to your browser (MSIE is a prime target for malware, adware, spyware).
Outlook, you should use mozilla thunderbird instead.
Spybot search and destroy – removes spyware.
Grisoft – virus scanner
Trendmicro online virus scanner – link 1, link 2.