(Apache) individual config for (sub)domains

[schildhans]

Hi,

I installed ISPCP a few hours ago and until now it works fine. MailServer & FTP are up and running. Now I want to configure apache. I have a customer with the domain domain.tld and the subdomain sub.domain.tld with /sub as folder configured.
Now I have to (manually) configure apache. As example sub.domain.tld needs mod.dav enabled, domain.tld needs Directory Listening etc.
My question is: where do I put this configuration?
I tried to put Options +Indexes in sub.domain.tld.conf found in /etc/apache2/ispcp.
But ISPCP still sends HTTP error 403 when trying to get a Listing.
And in /var/log/apache2/users/ there is no sub.domain.tld-error.log where I could look.
any ideas?

schildhans