Hi 
How To Avoid Hacker Attacks And Make Firefox More Secure
Ad-Aware is at your own discretion. In my humble opinion having something installed even as a on-demand scanner only that also resides in system memory is not good at all. Having both Spybot and Malwarebyte's Anti-Malware as on-demand scanners is a good enough line of defense, providing you check for updates regularly for both and perform a scan with each at least once per work.

You are very welcome and a pleasure to be of assistance!Many thanks for your help, I have a couple of questions if you dont mind.
FireFox is a fine browser and I use it myself upon occasion. Check for update periodically via:I use Firefox is this OK, and can you give me any tips to make it more secure?
- Help >> Check for updates...
How To Avoid Hacker Attacks And Make Firefox More Secure
As far as I am aware there should be no conflict with any of them. I use the MVPS Hosts File myself and have never encountered any problems when using FireFox.Will the Host Files you list work with Firefox?
By all means re-download/install Spybot and enable the Registry Guard(TeaTimer). No need to immunize however if using one of the custom Host Files.What about Spybot and Ad-Aware, should I download/use these?
Ad-Aware is at your own discretion. In my humble opinion having something installed even as a on-demand scanner only that also resides in system memory is not good at all. Having both Spybot and Malwarebyte's Anti-Malware as on-demand scanners is a good enough line of defense, providing you check for updates regularly for both and perform a scan with each at least once per work.