How to determine the number of Rows/Columns in Excel File [VB6]

Given an excel file with X number of rows each having Y columns.
I need a mechanism that will allow me select each Cell.

For example:
For ( j = 0; j < x ; j++)
For (k = 0; k < y; k++)
‘Do whatever needs to be done.

This will then go over each row and each column in each row.

Given that I am importing data I do know beforehand how many columns (Y) should be there, I just want to ensure there is actually the right amount and therefore I need a way to determine (Y) from the file itself and compare it with the # I am expecting.

For the rows it is a little different, I need to go down and loop through all rows in the file, how do I tell it when to stop?

Is there a totally different/better way to do this?
Something built into the Excel object maybe? (Excel.endrow or something?)

Code so far:

Dim oExcel As Object
Dim oBook As Object
Dim oSheet As Object

Set oExcel = CreateObject("Excel.Application")
Set oBook = oExcel.Workbooks.Open(c:\test.xls, True)

Thanks,

This should help you.
VBA code...

VB Code:

Private Sub Workbook_Open()
    MaxRowNumber = ActiveSheet.Cells.SpecialCells(xlCellTypeLastCell).Row
    MaxColNumber = ActiveSheet.Cells.SpecialCells(xlCellTypeLastCell).Column
    MsgBox "Last Row: " & MaxRowNumber & ", Col: " & MaxColNumber, vbOKOnly + vbInformation
End Sub

Looks like the best method I have seen so far.

One little question, how do I define the variable "xlCellTypeLastCell"?

I copy/pasted your VBA code below (to see it work) and keep getting the typical "Compile Error: Variable not defined" for xlCellTypeLastCell.

Is there a special way to define it?
As what?

It could be that I am using Excel 2003.
The definition is as follows from the Object Browser.

VB Code:

Const xlCellTypeLastCell = 11

What is the version you are using?