btw, got my Pololu programmer today. I didn't do much with it yet, but it seems great. There's extensive and quality documentation, software for Windows, Linux and OS X, command line and GUI tools to configure the programmer, it does both AVR ISP and Serial, autodetects 3.3V vs 5V supply voltage and can be configured to output either, plenty of feedback about the USB connection, voltage supply, programming status etc. from the LEDs. Seems like a very well thought out device with lots of features and considering I paid like 11EUR shipped I'm extremely happy with it.