This thesis is written as part of a case study in a Spanish information technology company, called Indra. The aim of the case study was to implement a method develop by the MERITUM (Measuring Intangibles to Understand and Improve Innovation Management), which would enable the company to identify and measure their intangibles. Jarle Hildrum conducted a case study of Indra in 1999, which resulted in the development of a methodology specified to Indra's needs, based on the MERITUM model. This firm specific method was the starting point for this case study and the development of an Intellectual Capital Account in Indra. This case study also aimed at producing a measurement system that could useful information to other companies developing Intellectual Capital Accounts.