Thanks for all the replies. Bluetooth does work......but there always seems to be a problem transferring information rather than being recognized etc, so a cable seems to be the best way. Although the majority of ebay cables seem to be USB with a driver, experience has burnt my optimism with chinese sourced gear, so was hoping to get hold of an original Nokia DLR-3P cable which is on one end an RS232 as the most reliable option and they are as rare as hen's teeth.
As an aside, that Nokia 6700c looks like a nice phone, basic yet capable. Perhaps a successor to luddite phone owners such as myself and Beagle
SHJ