You need an 90 lb. air jackhammer or a 60 lb. electric jackhammer (depending on your flooe thickness) Both you can rent. I must advise you, it's not an aesy job. You need manpower. You need access ( a window in the basement, or a bilco entrance) for getting rid of the top-rock and dirt. Jack out the entire basement floor perimeter. approx 12 to 18" off the wall. Remove the top-rock and use a railroad pick to loosen the dirt. Dig a trench using a trenching shovel down to the level of the footer. Install 3" perforated pvc pipe (hole side down) Pitch the pipe towards the sump pit. and stub it into the sump (crock) 3". Cover the trench with 3/4" crushed stone. Tamp down the stone and re-cement. CAUTION: you will need an air gap where the new cement floor meets the wall. There is a good product called mira-drain that can be used, or you can create your own gap with some good straight 3/4" boards made of poplar. If your walls are Cinderblock, you will need a hammer drill to make 2 bleeder holes in each block. If they are poured concrete, bleeder holes are not required. If you need more help as to estimating materials or how to mix your own cement, just post back, and I'll try to help you out, Happy Holiday's, Tom EDIT MESSAGE: OK forget the bleeder holes, i just re-read and saw you had a stone foundation, however the gap is still needed.
[This message has been edited by plumber Tom (edited December 15, 2003).]