Unlike standard Eclipse plug-ins, OMONDO has its own installer, and in general running that installer should do the trick. However, I had a colleague at work who could never get Omondo working in his box! All Omondo installer does is just copying the Omondo packages into the eclipse/pluggins folder � you could try that manually, and once you restart Eclipse,
you should be able to create new UML diagrams (From File -> New -> Other menu)
HTH,
Ashok.