MyEclipse->Preferences->Servers, expand the list of servers and then expand the list of Tomcat servers, select the server you’re interested in. On the main configuration panel, click the first Browse button, next to the “Tomcat home directory” text box and select the directory in which you’ve installed Tomcat. The rest of the needed configuration will be filled in. You can add optional program arguments and there are further panels below the main one for adding other options settings.
Don’t forget to select “Enable” at the top of the main configuration panel, otherwise the server won’t appear in the list you mentioned, then click OK.