Unable to detect CSV file.

I have some code that prompts you to select a file to extract data from, but when I open the folder with the CSV files it is empty, but if I have a normal ".xls" file it detects it fine. The code worked on my previous PC which was Vista, butI just upgraded my PC to Windows 7 and Office 2010. Could this be the cause, or is the code not working the way it should?

Static wbDataPath As String: wbDataPath = Application.GetOpenFilename("Excel Files, *.xls*")
    If wbDataPath = "False" Then Exit Sub