Its not a bad deal but is your mother board a FM1 socket? If its not the same cpu socket type it can be a good deal from here to Sunday, won't do you any good if it can't be installed.
New egg offers pretty good deals on cpu/mobo combo's, as long as you have ddr2 ram you shouldnt need to buy new ram either.
This one is for an athlon triple core- not really high end but you get the cpu and mo bo for $114, and it should be more than enough to handle anything unless gaming is your life then you might want to buy higher end stuff.
There are many for for the $200+ range im not sure what your price range is. Also if you have a fairly up to date mother board can you list the socket type? As if it s fairly recent socket type you can get away with buying just the cpu.