You can check if the web tier is running. 7001 is the default port for WebSphere and you'll see that in some of the defaults that Siemens throws in. Another that you might see (in other areas) is 8080 which is the default for JBoss. Using port 80 (default for HTTP) is fine. The important thing is that whatever you're using for the web tier (J2EE: Apache, JBoss, WebSphere or WebLogic; .NET: IIS) is running and configured for port 80.
Beware of hot deployments as you can get into serious trouble if you don't understand what is going on and how to fix it. Use cold deployments wherever possible.