With the advent of the Open Grid Services Architecture and its underlying infrastructure – the Open Grid Services Infrastructure – there is an increasing interest within Grid communities worldwide in Microsoft .NET Web Services technologies and their applicability to Grid services. In this paper we describe a collaboration between Microsoft Research Limited and NeSC (represented in this project by EPCC) which has set about exploiting this interest by: • Developing an implementation of the Open Grid Services Infrastructure (OGSI) using .NET technologies. • Developing a suite of Grid Service demonstrators – including an OGSA-DAI demonstrator – that can be deployed under this .NET OGSI implementation. • Developing training courses and materials to educate and inform the UK e-Science community about .NET and its applicability to Grid applications. We describe our OGSI on Microsoft implementation and present an overview of our first OGSI on Microsoft .NET training course to be held on 9 th -10 th September 2003.