Importing accents from a txt file

Hi everyone

I have the following proble that I can't solve for now:

I've got a pdf file with forms

I've got an excel file that I export to txt (tab delimited text file)

When I import the data from the txt file to the pdf everything is fine but the french accents (é or è or à). For example the "é" becomes a " ,".

I thinks it might be related to unicode or utf but I don't know how to export properly then import those characters.

Any idea ?

Thanks

Florent

PS: I'm using Excell 2011 on MAC and Acrobat 9 Pro.