I don't have my copy of BBIBJ right here; but I believe the simple answer is that, yes, when the count reaches zero, it indicates that the advantage for you has risen by about one percentage point from the starting advantage. So in most games, you'd have a slight edge at the pivot point.
The book also has an "advanced" Red 7 count, which uses Snyder's "make a fraction" system to determine what he calls your "True Edge." YOu can use this information to develop a bet ramp, similar to the scheme that hi-lo counters use with the true count.
For more in-depth information, check out Blackbelt in Blackjack by Arnold Snyder, or his website at blackjackforumonline.com.