http://milehighwings.com - usb and pic serial cables, good also for Blade CP/CX and Walkera Tx's
or
If you are pc literate (not a genius, but not complete dummy), make yourself a $2 cable for and use this free [link=http://www.geocities.com/shaul_ei/SmartPropoPlus.html]SmartPropo[/link] software.
Stefan
http://rcflightsim.com