I just install KiCAD on Fedora 17 and added the Arduino Nano library to KiCAD. When loaded (added component) it's labelled as Arduino Mini. Let me know if this is ok. I'm also looking for a 34 pin male header (the connector found on a floppy disk controller) library for KiCAD. Please point me into the right direction.
I have no idea about KiCad as such, but if you can't find a 2x17 header you can normally combine 2-3 smaller headers to get the same result. It's a bit of a kludge but works.
Rob