TSGannGalt: Your quote below was most intriguing. For Forex, there's no volume but you said "more-so" bid/ask data to test the strength of support or resistance. Can you elaborate? I'm extrapolating that you either mean using Level II data or the bid/ask spread. Level II is virtually impossible to get data to back test with. So I'm guessing you mean the bid ask spread. Furthermore, I see some times that prices blow right through S/R and, obviously, from my own trade experience bid/ask spread would be LARGE at those points and much tighter when it hits true S/R. Unfortunately, the tick data I use only includes the bid prices. If that's what you meant, it makes sense. So I need to get some live bid/ask data to test out the idea. Please clarify if I'm on the wrong track. Thanks again. Wayne