If the edge is getting worn, look at the toe rather than the camber. Camber
produces ruler-straight wear across the tire, while toe misadjustment wears
the very edges. If the inner edges are getting worn the wheels are toed out
too much, while wear on the outer edges tells you the wheels are toed in too
much.

The best solution is a professional alignment, but I suspect you wouldn't be
asking if you had the money available for that this Christmas season ;-)
Here is the shadetree way of doing it. (Note - this isn't nearly as good as
a real thrust alignment, but will control the wear.)

Put strips of masking tape across the front tires from sidewall to sidewall
and drive a mile or so on fairly straight road. Pull off and look at the
wear pattern on the tape, replacing the tape for the next test. If the tape
shows wear on the insides, loosen the jam nuts on the tie rods (where the
linkage from the steering rack attaches to the wheels) and adjust each an
equal number of turns - half a turn at a time is plenty for initial tries -
in the direction that makes the front of the wheels point inward more.
Remember, the edge that is getting the wear is being exposed to the oncoming
road too much, so worn inside edges mean turn the wheels inward. Retighten
the jam nuts and record your adjustment on paper so you can keep track of
where you started in case you make it worse. Repeat until the wear is
balanced between the inner and outer edges. If the steering wheel isn't
straight, adjust one side in and the other side out equally (small amounts,
start with 1/4 turn) to center the wheel.

Have a real alignment done as soon as you can afford it.

Mike

has it been lowered?

Most ALL front wheel drive cars will wear out the inner tread. Its the
nature of the beast kind of thing.

BUT your car can only be adjusted for toe-in, which may be a cause of
accelerated wear.

Its ALSO very common for the upper ball joints to go bad.

Check your front end carefully.

-Pete