Hrumph, there is a lot more to training than the big three lifts.

Frankly, I would work on dips. It has been my experience that dips utilize the triceps much more than bench pressing. straight arm pullovers are another good upper body move that will hit the triceps as well. Granted, neither exercise qualifies as much of an isolation move, but that is what works for me... and I really don't train for physique or hypertrophy, it just kinda happens as a side note to my training.