IIS/firewall problem?

Ok, I don't usually work with servers, so please be patient.

I have a remote server and I have control over everything but the firewall. On my computer located on another site, I can map the drive to my server, go through folders, modify, copy files...anything like that. I can NOT use URL to run a webpage. I can see from the computer logs the attempts to get to the computer using http are successful, however there is no sign of the attempts on the IIS log file. IS it possible for the firewall to allow the ability to access the computer by mapping a drive and not using http ? I have all the shares set, the wwwroot folder is set. Also, on the same site as where the server is I can use the URL and access it correctly. Is this out of my hands?

Please help.. any little bit would be greatful.

Thanks so much.

Yes, mapping drives using SMB uses different tcp ports from wseb serving.

Port 80 must be open through your firewall and forwarded to the IIS server computer for outside web access.