Ok, I got my xmega xplained board at long last and found there is not 6 pin header for programming, only a 10 pin jtag which supports pdi.
Can I assume that I need to make an adaptor to convert the 6 pin isp header to the 10 with the following pin connections:
10 way jtag ---> 6 way arvisp
pin 2 gnd ---> pin 6
pin 4 vcc ---> pin 2
pin 6 clk ---> pin 5 (rst)
pin 8 data ---> pin 1 (miso)
There is a ledgend on the xplained pcb for the jtag header that appears to show data on pin 3 instead of pin 8. Confused!