Hi
Eclipse mian purpose is java development , not J2ee , there are some going effort for developing plug-ins fofr j2ee development (easy j2ee developmet).
and some available plugins like myEnterprise workbench or lomboz.
For using Eclipse for J2me , you need some plugins like
www.eclipseme.org .
NetBeans from
www.netBeans.org is a opensource
IDE and it has very good J2me Plugin (for netbeans 4.1 Beta) i suggest you check it out , you will find it useful.
Hope it helps.