I know you want a quick "yes" or "no", but to be exact you really should have someone come and look.
Some GENERAL rules used:
find out which direction your ceiling joists are running. If the wall runs PARALLEL to the joists it usually is NOT. If it runs perpendicular, the chances are very good that wall is load bearing.
Often times a load bearing wall will have support all the way to the foundation. i.e. there is another wall directly underneath it, or some sort of beam in the basement.