Over recent years the market for Technology-Based Learning (TBL), delivered via the World Wide Web has increased rapidly (especially in the field of distance learning). However, traditional models of project-based internationalization are ineffective in this extremely heterogeneous environment. Educationalists often produce some highly effective products, however there are no readily accessible i18n guidelines for education. In this paper I shall examine three case studies, McGraw Hill's "Multimedia Encyclopaedia of Mammalian Biology" (MEMB), a big-budget CD-ROM based multimedia project that suffered from multiple translation (at times without native speakers being involved). Dorling Kindersley's "I love Maths" (ILM), a project that was localized despite no thought being given to i18n in the original design specification. Finally WHURLE (Web-based Hierarchical Reactive Learning Environment, produced as a collaboration between the Universities of Nottingham and Hong Kong). This system is designed for adaptive distance learning projects to be delivered in both English and Cantonese, and it is built upon an XML/Unicode infrastructure. These case studies will illustrate some of the limitations of a project-based model, and how a generic approach to I18n can aid development. As a result of our experiences we are currently developing a generic set of guidelines which will eventually facilitate the l10n of educational TBL products from diverse cultures.