H4 or 9003 for the Headlight...just in case you wanted to know, here are all the other lights for a Civic of that Generation.
Parking light
Part number = 3496
Front turn signal
Part number = 3496
Rear turn signal
Part number = 7440
Tail light
Part number = 168
Stop light
Part number = 7443
High mount stop light
Part number = 7440
License plate
Part number = 168
Back up light
Part number = 7440
Front sidemarker
Part number = 3496
Rear sidemarker
Part number = 168
