Exporting portuguese lingq's to excel

hi,
I do have a problem exporting my lingq’s to excel as a .csv file. It imports without any problem into my Office 2007 Excel program but it does not properly handle the Portuguese accents and the til (~_)
For now I just use the find-and-replace function to repair the damage but, I know there will be a way to fine tune some settings somewhere; just don’t know where…and how. Anyone out there who’d be able to help me with this?

kind regards, abraços, gruesze, groetjes and much more,
Willem

I have the same problem with Russian.