hi,

You should first set the property 'Enter Key Behavior' of text box to 'New Line in Field'.
Then use the following code to add the text at the end of a text box. 'vbNewLine' is VBA constants that adds new line.

Private Sub Command0_Click()
Text1 = Text1 & vbNewLine & vbNewLine & "your text"
End Sub

Shobha