In this paper, we explore innovation processes surrounding the design and implementation of ERP systems in two case companies, looking at this from a knowledge integration perspective. More specifically, we examine the relationship and network building processes that are necessary to support knowledge integration and user involvement during innovation. In doing this, we utilize the concept of social capital and relate the different sources and effects of social capital to the different innovation episodes. This highlights how the bridging and bonding aspects of social capital are differentially important during different episodes and leads us to conclude, contrary to the suggestion of Adler and Kwon (2002), that it is helpful to differentiate between the two.