Adafruit Industries Adafruit Industries USBtinyISP AVR Programmer Kit
USBtinyISP is a simple open-source USB AVR programmer and SPI interface. It is low cost, easy to make, works great with avrdude, has both 6 and 10 pin standard ISP cables, is AVRStudio-compatible and tested under Windows XP and MacOS X, it may or may not work with your specific Vista/Windows 7 system.
Adafruit Industries USBtinyISP AVR Programmer Kit
Usually ships in 5-7 business days.