Depending on your budget there are several noise reduction tools you can try:
Z-Noise from Waves. Does a great job at a reasonable price but the algorithm doesn't hold up very well against too much reduction (ie. your dialog will start to sound "underwater")
WNS from Waves. More advanced than Z-Noise, approaching the quality of a CEDAR. Is very impressive, but beware dialog pumping from too much processing.
CEDAR. It's what the pros use. Very expensive, but if you can borrow one for a while or if you know someone who owns once and can do a test-pass on some of your material it would be worth your while.
UPDATE: A friend of mine recently turned me on to SPL De-Verb. It works really well at reducing…you guessed it -- reverb! It's a fantastic one knob solution that surely does the trick.
Best of luck!