Yossi:

Password protection is pretty easy to do when you save the worksheet. I haven't tried unprotecting a sheet but suppose it could be done.

Scott

#INCLUDE ..\Excel.h
goExcel = CREATEOBJECT( "Excel.Application" )
goExcel.Visible = .T.
WITH goExcel
    .SheetsInNewWorkbook             = 1
    .Workbooks.Add 
    .ActiveSheet.Name                = "MySheet"
    .ActiveWindow.DisplayGridlines   = "TRUE"
    .ActiveWindow.DisplayHeadings    = "TRUE"
    .Application.DisplayFormulaBar   = "TRUE"
    .ActiveSheet.EnableCalculation   = "TRUE"
    .Cells.Font.Name                 = "Arial"
    .Cells.Font.Size                 = 10
    .Columns("A:A").NumberFormat     = "@"
    .Cells( 1, 1 ).Value             = "Going to password protect this sheet."
    .Cells( 2, 1 ).Value             = "The password, for what it's worth is Pa$$w0rd"
    *                        File Name       Format     Password
    .ActiveWorkbook.Saveas( "testPassword", xlExcel7, "Pa$$w0rd"  )
ENDWITH
RELEASE goExcel