Penguinblastter!!!
You didn't mention which heli you were flying... in case it's the trex 450 here's a link to follow that will provide directions on how to make the trex fly less like it's on crack.
http://www.rcuniverse.com/forum/m_84...tm.htm#8473722

Maybe you can reply with which heli you are flying and I can give more specific results... in the meantime, try changing the expo on the transmitter settings on the collective channel to 25% or more. (follow the link above for instructions on how to get into the transmitter edit settings. when you have the transmitter edit window open, increase and then decrease the collective stick to see which channel is the collective and then edit the expo... note that the expo setting is different in each flight mode. to change flight mode, flip the switch on the transmitter.)

Please let us know your results and which heli.
Thanks, goodluck
Scott