Apache - can access locally, but not other comps on LAN

I just installed Apache and I'm interested in starting to learn web design and server admin and so on, but I'm hitting a stumbling block before I even get started:

I can get the "It works!" message in my local browser if I enter localhost, 127.00.0.1, or my local host name into the browser URL bar.

If I try and access it from a laptop on my LAN, the page never loads and eventually times out.

I've cleared the port 80 connection in my firewall and in Windows firewall. I've even disabled both and tried it that way, but no go. I've checked the permissions on the page I'm trying to serve up (just a "hello-world" type of thing with a picture I added) and the permissions all seem OK - full control for me, read access for everyone else.

Can anyone guess what I'm missing here?

Thanks for the quick reply.

I actually figured it out myself. The top-level folder didn't have the right permissions set. I have it sitting right in C:, and I had all the lesser files and folders set right, but the big container wasn't.

Thanks anyways..