Eheim 1250 pump
Maze 3
silicon tubing (7 feet is way more than enough. I bought 10ft.)
water wetter.
--from Danger Den =$145 shipped
add a heater core from autozone w/ 5/8" fittings, $20-30
PVC and brass fittings for a resevoir
glue and teflon tape
zip ties
hose clamps
random screws needed
random wire/ fittings for fan control
-- from Lowe's = about $25
fans and such for the radiator
switches for fan control, etc.
--from mpja.com = about $20
stuff I forgot, including bandaids, sandpaper, etc.

= $15
You could spend less, but I figure I spent at least $250.
But, it's quieter and much much cooler... and fun.
PS... I also bought a few Panaflo 80mm L1A fans from mpja.com for under $3 each... beat that.