Program(s): Band-in-a-Box 2011 and, infrequently, RealBand 2011
OS: W7x64
ASIO Driver: W7x64 Beta Driver 6.0.1.1246
Audio Interface: E-MU 161PCI
Results:

In BIAB - No apparent latency, perfect.

In Real Band (I just tried this now and did a little tweaking, but don't use RB much) - Typical latency, about 200 ms. Fiddled, no joy. Selected ASIO Direct Monitor and got feedback zap.