Ok, dude, dont panic, for starters they're iriduim plugs.
Go over what you moved and changed.
Check that the ignition coil is plugged firmly in.
Check that all grounds are still attached.
Chech there is no water around the dizzy area.
Check the ignition timing.
Did you gap the plugs?
If you put back in the old ones and it still doesn't start, it isn't the plugs, check the obvious.
Goodluck, post back if more help is required.