Hi Pros, Can i use a MSDN Windows 2008 Server License to host couple of MSDN- Windows2003 and MSDN-windows2008 servers ? All the servers in the Hyper-V are used only for a Developement environement, but in this case can i use also a MSDN license to host all these servers ? Or do i have to buy a regular license of W2008 ent. ? Maybe more clear: { Physical Machine: MSDN Windows 2008 Server Ent.} ********Virtual machines: MSDN Windows server 2003 Ent.******** ********Virtual machines: MSDN Windows server 2008 Ent.******** ********Virtual machines: MSDN Windows server 2008 Web.******** ********Virtual machines: MSDN Windows server 2008 Web.******** ********Virtual machines: MSDN Windows server 2003 std.******** Thanks in advance.