Upgrade to Internet Explorer 6 - that has Outlook Express 6 included with it, and has far less security loop holes in it and is safer than version 5. Get the update direct from Microsoft's site... Urrgh!!! Did I just say that - to visit Microsoft...? I feel dirty and diseased now... Must go scrub....
If you are after AntiVirus, and cant be arsed (or are too tight) to pay try AVG 6 Free Version - it is exactly what is says, FREE! Get it from
www.grisoft.com - makes sure you get the free one and not the full corporate version on 30 day trial
The updates are free and it doesnt take forever to download.