This would be great for me but can it work with LED's. I haven't work with
LCD displays before and don't know which one works.

You might try Francesco Morgantini's (IK3OIL) PIC freq counter. It's
based on a 16f84 and he will email you the hex code if you request it.
It will run to approx 45 MHz as is and up to 1.5 GHz with a simple
add on prescaler. He has divide functions built in the program (
divide by 10/32/64) and he has also include IF offset if you want to
use the counter as a freq readout. I've etched about 40 boards for
local hams here and every one that has been built has worked without
fail. Total cost has been in the neighborhood of $35.00 including the
prescaler but excluding enclosure. If you want a copy of the circuit
board layout with prescaler, just email me at ww2742 at dragonbbs.com.
As for accuracy, I just adjusted one today for another local ham at
it was within 200 Hz at 440 MHz using a recently calibrated IFR-1200
for a source - that was close enough for me.

Here's his website URL:
http://digilander.libero.it/ik3oil/menu_eng.htm