Depends what's useable for you I guess.
You just need to set the comport objects baud rate to 57600.
The RN-XV manual says: "Valid settings are {2400, 4800, 9600, 19200, 38400, 57600, 115200, 230400, 460800, 921600}"
So you could probably go faster than 57600, the arduino can do at least 115200.
i have it working as a serial link with the virtual serial port program i have. can i route the 57600 stream from the router, straight into the arduino object, with the comport removed and just pipe the data straight from the ip address into the object, without any routing through serial? and if so, which of the networking objects would give me the bi-directional link neccesry for this to happen?
Martin