Just to complete this answer:
The way to open a CSV that is encoded in UTF-8 in Microsoft Excel is as follows :
Use the Data **Data** tab, then click on Import from Text **From Text** :
![alt text][1]
Then choose the CSV file that was exported from Collect and then choose the Charset encoding in the selector:
selector ( **Unicode (UTF-8)** ):
![alt text][2]
[1]: http://www.openforis.org/support/upfiles/2015-06-23_17-03-03.png
[2]: http://www.openforis.org/support/upfiles/Text_Import_Wizard_-_Step_1_of_3_2015-06-23_17-03-41.png