Help for Newbie with simple trading system

I am trying to test a system with the following parameters:

Buy: If the 50 day SMA, C is > 200 SMA, C and
Stoch(14,3)>30 where the previous day Stoch(14,2)<30.
Trailing Stop = 2*ATR(20)
or stoch(14,3) goes back below 30 before the MOV(c,7,e) crosses above MOV(c,20,s)

Sell:
Trailing Stop(from above) or Mov(c,20,s) crossing below Mov(c,7,e)

Any help would be greatly appreciated.