如何为x86和CF.Net目标使用相同的C＃2008项目？

I have a C# project in VS2008 which I wish to build for two targets - x86 and the compact framework for dot net (CF.Net) depending on a chosen configuration (say Debug/SmartDeviceDebug etc). How do I go about this? I have an inkling this can be done somehow using the command line and msbuild but I am interested in a solution which works from within VS2008. I have a C# project in VS2008 which I wish to b