Read from spreadsheet vi ascii problem

Hallo,
there is a thing that I cannot read from an .xls file becouse every time I receive ascii signs, which I cannot successfully convert into chars (I#m running circles here). Does anybody has an idea how to open a big table with strings inside from xls in Labview? I would be really thankful,
K.
Attachments:
problem.JPG ‏53 KB

And if at all you want to read an excel file, then you have to use either "Report Generation Toolkit" or "ActiveX based" vi to read from excel.
(The attachment is taken from: http://zone.ni.com/devzone/cda/epd/p/id/2231)
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Attachments:
readfromexcel2009sp1.vi ‏22 KB

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