Iv lost all my keys for my 1998 focus what can i do

If your car key had a chip in it then call a locksmith that is able to reprogram a new key to the antitheft system. There is an chip inside the key that the system uses to enable the engine to start. AutoZone sells new lock cylinders w/two keys for like $80 but you'll still need to program the keys with a scanner that has antitheft capabilities. The dealers charges like $475 for a lock cylinder with one key.