Security for Windows XP

[Ricochet J]

Hi,

What security precautions would you advice for someone like me who is running Windows XP? I've installed a fresh copy of XP.

For my firewall: I am using a hardware firewall on my BT Homehub router, and I'm using the Windows firewall.

For my anti-virus and malware: I am using Microsoft Security Essentials.

Is this all that I need?

Thank you!

 

[Ricochet J]

I'm using Firefox 11 and not Chrome.

Is there any advantage to using Chrome over Firefox 11?