Re-initialize publication.

Hello ,

Do i have to re-initialize the publication if i add some articles in the publication .
Its a transactional based push replication.
I checked that once you add articles in the publication , the new articles are not replicated to the destination once the snapshot is started manually . So i guess , the publication needs to be re-initiliazed . Is that so ?

I have SQL 7.0 with SP4 .

Thanks