Can you add an accented characters to the querty keyboard on the iPad?
An even simpler way to access the most commonly accented characters is to hold down that letter and you are given options.

To see what I mean, just click and hold on the letter "o" and you'll be given a lot of choices. 

The standard keyboard on a USA iPad will have accented characters for e, y, u, i, o, a, s, z, c and n.