'(general declaration)
Dim nFileNum As Integer, sText As String, sNextLine As String, lLineCount As Long
'==================================
Private Sub Command1_Click()
' Get a free file number
nFileNum = FreeFile
' Open a text file for input. inputbox returns the path to read the file
Open "C:\Documents and Settings\Sudeep\My Documents\3.txt" For Input As nFileNum
lLineCount = 1
' Read the contents of the file
Do While Not EOF(nFileNum)
  Line Input #nFileNum, sNextLine
  'do something with it
  'add line numbers to it, in this case!
  sNextLine = sNextLine & vbCrLf
  sText = sText & sNextLine
Loop
Text1.Text = sText
' Close the file
Close nFileNum
End Sub