Similar to my previous posting, here is a sample management pack for monitoring EJBs on WebSphere 7.0. For an explanation of what is happening, refer to the previous posting (and all of the legal warnings denying responsibility therein). :)
Basically, the differences are:
This attached XML file is for the DEBUG version of OpsMgr! If you want to use it with a signed version of the product (which all of you should have - shame if you do not :) )
See here getting the right string: systemcentertech.com/.../locating-the-public-key-token-for-a-management-pack
Also, although the XML provided is targeting SCOM 2012 SP1, this will work with SCOM 2012 - just change the versions as appropriate and you're good-to-go.