The Model Driven Architecture (MDA) offers a more efficient software??engineering process by raising the level of abstraction. Tool??support for the MDA is usually limited to generating code from UML??diagrams. Most MDA examples in scientific papers are limited to??relatively simple use cases that help the understanding of the MDA,??but are not suited to demonstrate the powers and flexibility of the??MDA. In this paper we show an MDA approach to cross-compile byte??code instructions from Microsoft's Common Language Runtime (CLR) to??Sun Microsystem's Java Virtual Machine (JVM). We introduce an??XML-based representation of byte code we call XMLVM. Based on XMLVM??we define XSL stylesheet transformations which can map certain??features from the CLR to the JVM.??Besides providing a specific??cross-compilation approach between the byte code of two different??virtual machines, we also show how XML technologies can be used??within the context of the MDA.