I would look at the the vSphere Web Services SDK if you really want to roll up your sleeves,,, or if you need to do this in a jiffy consider using PowerCLI.. Sample code is included in all of our kits, and we also have code posted on our Code Central site "Sample Code"
Keep up with latest info on vSphere PowerCLI http://blogs.vmware.com/vipowershell - Follow me on Twitter @heyitspablo
