In this article we illustrate a methodology for introducing and maintaining ontology based knowledge management applications into enterprises with a focus on Knowledge Processes and Knowledge Meta Processes. While the former process circles around the usage of ontologies, the latter process guides their initial set up. We illustrate our methodology by an example from a case study on skills management. Categories and Subject Descriptors H.4 [Information Systems Applications]: Miscellaneous Keywords Ontology, Knowledge Process, Knowledge Meta Process