How to avoid automatic recalculation after importing data with OpenText?

[mpic20]

Hi,

I'm importing data using the Workbooks.OpenText VBA method in Excel 2007. The problem is that for a reason it automatically re-calculates my active workbook even though I've set the calculation option to Manual. Since the re-calculation takes a while, I would like to avoid it at this stage.

BTW, I've tried to put those commands prior to OpenText but I still get the same result.

Application.Calculation = xlCalculationManual
and
Sheets(1).EnableCalculation = False

Thanks!