Last week, we had the author of TDD for a Shopping Website LiveProject. Friday at 11am Ranch time, Steven Solomon will be hosting a live TDD session just for us. See for the agenda and registration link
IIRC Hibernate uses Log4j. You should be able to configure log4j to send different messages to different log files.
Alternatively, you could post process the log file to extract just the messages you're interested it. This shouldn't be too hard with the usual Unix tools like grep, sed, awk, etc., or perl if necessary. I'm less familiar with simple text processing on Windows but something must be available.