setting up virtual hosts

Hi guys, I know this is not an apache group, but I am sure you guys did deal with the same problem as I do currently. So somebody might know it. I did set up 3 Virtual hosts in my httpd.conf with the same ip adress but a different name and dir. Serving 3 different applications. This works fine on the local machine. As soon as I access the names from another machine in my network I do only get the first application (the first entered in the httpd.conf). No matter which name I type in. Does anybody know how to solve this prob or can make a good hint? Thanx in advance Andy