Can i use a USB-to-RS232 Serial converter to connect to Arduino ?

larryd:
I would get rid of those single pin headers and combine them into a 6 pin header.

yeah, i have one of those - i guess nothing beats making your own cabling, plus my stock of wire is more flexible than that jumper which is rather stiff. (i still haven't bought a proper crimping tool though, been manually squishing it with pliers for some time.)

i'd already made one for the ISCP with a 3-pin male header for the breadboard end, you might have seen it in the pics i took.