b18a, most likely
http://www.c-speedracing.com/howto/b18cswap/swap.php
read that first, for a basic idea of what you will be getting into
You'll really want a hydro 5speed transmission for that in the civic, since no way will you want to drop in the auto trans and then convert the chassis. Any B series transmission 92+ is what you want (stay away from the LS trans, unless you want to get good mpg)
Anything else, I guess just do some reading and research.
Oh, and caps lock is located between Tab, and Shift on the left side of your keyboard...