Big Problem Need Help!!!!!

Your torque converter most likely needs to be serviced or replaced. The fluid level in the torque converter plays a major role in the transfer of energy from your engine to the transmission. If the fluid level is not correct, then you will experience a situation like you mentioned, where you have to get the revs up a bit before the transfer of energy takes place.

How Torque Converters Work - HowStuffWorks

I won't question your mechanical ability, however you should be warned that this repair is quite extensive and should be done by a shop unless you are quite the gear head.