In our school's Yearbook, a large amount of our monetization comes from student ads, which narrows down to people who buy a page with their face on it.
The idea this year is to do a custom portrait of the student as a main image for each ad (consistency is key).
Being new to non-candid portrait shots, what would be the best lighting set up?
Something generic, but maybe even dramatic?
Dramatic because that is the style I'd like them to be in (personal creative stuffs), and generic because we only have one strobe, and no lightboxes

.
Any ideas for basic lighting set-ups? Tips? I'm not too great of a people-person, any communication tips, even?
Thanks in advance!
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Current equipment: Nikon D90, 18-105mm
Wishlist: 50mm f/1.4/8.