The Terminal Services Team Blog has a great blog entry published recently where they describe the support that has been added for dynamic virtual channel drivers within RDP. Most of us are aware that virtual channels exist within Terminal Services and Citrix ICA to allow for the exchange of information between server and client such as clipboard contents, file transfer, etc. Those virtual channels are statically defined by the protocol and are moderately difficult to implement. The blog entry posted illustrates the process for creating a dynamic virtual channel driver that is implemented as a plugin server side that allows to a content menu to be added to send a file to the TS Client’s Desktop. Personally I think this feature would be HUGE as file transfer to the client network is one of the biggest complaints from a useability perspective. Hopefully Citrix will get on the bandwagon and create similar functionality in Presentation Server.