Cinde,
I wonder if what I call curved text is the same as what you call arcs.
From last year on the Adobe forum I posted the following:
For your convenience, I have listed the title templates that I found to have textboxes with curved baselines that you can copy and paste into your own titles. The curve control points seem to be permanently locked, but you can still drag the other control points. There are different curve shapes in the bunch. Pressing Shift-Backspace will delete the character to the left.
Entertainment -- Retro TV
General -- ComicBook
General -- Ladybug Picnic
Movie Genre -- Musical
Travel -- Beach Resort
Wedding -- Romantic