depends on the doctor and how comfortable you are with using artificial means... aka drugs.
most of the time if the fever is over 102 you can give them a very warm bath... this helps bring the temparture down - you dont' want to give them a cool bath as that can cause shiveriing which raises the body tempature.
the biggest thing is keeping the baby calm as the more active and frustrated they are... the higher their body tempature.
personally... i'm a tylenol advocate. I've used it at the first sign of fever and runny nose since the day she was born, and i've managed to head off every sickness and infection she's come across thus far.
i guess being that this is the first very high fever she's had... it must not be that bad of advice
LOL