I am performing a small feasibly test before building my app. Currently I have several options. The first includes building an application that combines silverlight and activex. Now activex can work with only .net framework 1.1 installed on the client's computer.
The other possibility is working with XAPBs which demand .net framework 3.0.
So my question is, What are the framework versions that automatically come with windows XP (including patches and service packs). It's very important for understanding if what I am trying to develop has any market at all...