'Reference made to excel 8.0

Dim xlApp as excel.application
dim xlBook as excel.workbook
dim xlsheet as excel.worksheet
dim myFile as string

myFile = "C:\myfolder\myfile.xls"

Open myfile for output as #1

I want to access the worksheet pSheet and I want to add the words "help me" to cell # A4 and "please" to cell # A5

How do I do this?