I am setting up to develop web applications using arcgis server 10.1 and eclipse. We are using windows servers but are using apache/tomcat. I have the AGS up and I can connect to it with Arcmap. Now I have seen several little how-tos to that hit on how to install the esri plug-in on eclipse. However, they don't say a thing about how to get the damn plug in! Where is it? How do I get a copy?