That's a good question and I don't honestly know the answer. The simplest way to guarantee that it goes in there is to enter the character in another program, copy/paste it into the titler. Other than that, I'd check out the help section on Premiere Pro and read through the titler section.
Here's where you would start http://help.adobe.com/en_US/premierepro/cs/using/WS7FCA2018-572E-4b76-8D4E-6E95B588B0E3a.h tml
Hope this helps,
There are several ways to do this:
Copying like Dennis said.
é is ' plus e,
è is ` plus e,
ë is " plus e.
Another way is to use ASCII codes.
The paper is in Dutch but the code is universal.
Hold down the ALT and type the corresponding number on the numeric path.
So é would be ALT plus 130.
As others have said, Copy/Paste is the easiest way. I just use the Windows Character Map (have it as a shortcut on my Desktop, 'cause I use it so often for my wine writings), and that works perfectly.
One can also do the text in Word (I use WordPerfect), and then Copy/Paste, but one needs to watch the fonts that are in use, as some will not translate and display properly. For me, in WordPerfect, i just use the same font, as I will want my Title to use, and then Ctrl+W to select the Multinational, or Scientific, etc. characters. Been so long since I use the Alt+ codes, that I have now forgotten those.