zencart in localhost

I've a new server web with apache, mysql, php on my local pc.
I've also a public IP address 87.24.162.110
I've stup external dns proveder to pint to this ip (with subdomains name zen.100asa.it)
Now I've setup configure.php with this name (zen.100asa.it), but I can't access from local to this address
I hope I'm clear.
Thank's for help

You'll probably need to add the 'name' to your own **hosts **file in order to see it, until/unless the DNS service you mentioned becomes updated and its results available to you.

Adding something like this may help:

87.24.162.110  zen.100asa.it

This post talks about where your **hosts **file is located:
http://www.zen-cart.com/forum/showpost.php?p=22841&postcount=8

But, then again, I'm not certain whether the 3rd-party DNS service will work to allow everyone else access properly either ... the routing of a subdomain should be done by the hosting company server where your main domain is hosted ... otherwise you may end up with circular loops of confusion trying to determine which destination is truly valid.

ie: *.100asa.it = host IP address
and zen.100asa.it = a different IP address

If you're going to do that, then you should be customizing the DNS settings on your host's server, not via a 3rd-party DNS service.