oo ee..
timing belt snapped?

check your valves and pistons before you go about replacing the belt itself.

about the belt though,
on a fwd car (hyundai elantra), me and my bro took only a day or two to put it in.. support the motor, take off the mount, lift the motor/drop the motor, take off the acc. belts, take off cover, take off crankshaft pulley, loosen tensioners, mark where the cam teeth are (or set it to TDC before you start taking it off), take belt off, replace belt, tighten tensioners, and re-assemble.