stryped wrote:
I dont know if they carry blades for this jointer since it is so old. I
went to the sears website and they said "parts are not available for
this model".

Blades aren't the same as other replacement parts - sizes SHOULD be
pretty much standard. Even if Craftsman did sell them, I wouldn't get
them from there.
Once you figure out what dimensions the blades are (measure them), just
look around until you find some that are the right size. You might
check out http://www.infinitytools.com/products.asp?dept=1110
to start.
Andy