Which bootloader to use

I'm using a minimal Atmega168 and a RS232-TTL converter, and wanted to set it up with a bootloader again (having erased the chip in a fit of experimenting with clocks).

Which one to use? There are lots of them, and several say 168 in the name.
Does arduino-0021\hardware\arduino\boards.txt specify the right one?

or if not, which is the right one?

(Atmega168, 16Mhz crystal circuit)

In version 22 (I think also versions 20-22) of the arduino IDE, the third one down from the top should be the one you select. For version 19 then it's the second board listed.

Thank you, that fixed it.