Tuning SpamAssassin/ClamAv/website configuration suggestions

Okay folks.
First, if forums already exist on these threads I apologize in advance.
Secondly, I thought I’d try to combine some of my questions into a single thread.
My first couple of questions deal with the amil configuration.
I still have my mail setup on the stand-alone program seutp, along with ClamAv.
What I would like to do is see if I can adjust RAM used by ClamAV/SpamAssassin.
It’s been so long since I’ve deploied a SpamAssassin system, and more importantly, what I’m refering to is adjusting the RAM useage of it.
Any suggestions in that area as it relates to ClamAV/SpamAssassin?
The next set of questions happens to deal with something a bit weird.
I got a virtual host created just fine in Apache using a virtualdomain creation tool.
But when I go to the website primarily, I get:
http403 forbidden from Internet Explorer.
All I know for sure is that it’s a 302 error.
I haven’t yet uploaded an index file to public_html, though.
Should I try that?
Other than the above questions I have about tuning ClamAV and SpamAssassin over all so that they wil not take up a hole lot of RAM, I’d appreciate some ideas on that.
Any ideas are appreciated with regards to that topic, as well as the question I’ve asked about the website stuff.
I forget what permissions Virtualmin sets by default for new sites/hosts.