Belarc Advisor : improving some results

I ran belarc Advisor and (of course) some remarks have been made about things that can be improved to secure my system (Windows XP Professional SP3 v3264 no domain, just a workgroup).

I have been able to change some settings but haven't found how to change some others (haven't found them on the internet either).

a few things I can't change are:
a) "Application Event Log: Maximum Size" (nor System Log nor Application Log) [I changed their sizes and retention policy using eventvwr, but don't see them appear in gpedit.msc : no entry 'event viewer' or something like that]
b) "Disable Autoplay from the Default Profile" I just can't find how to change that setting (all other in the "Additional Security Settings" group are GREEN)

Can anybody tell me how to change those settings (maybe even a good reference to a document how to improve ALL of the security issues mentioned by the program)

 

Belarc Advisor didn't like my security at all :

1. CIS Benchmark Score : 0.63 of 10
2. Virus Protection : Unknown
3. Microsoft Security Updates : 81 missing

And a very long list of things to do. It's depressing

P.S.: members don't listen to my advices, they are bad for you.