I may be wrong here but i dont think you can actually do that. the reason being that you want the user to click on the label. This would require the label to have the focus.
if you asign the focus to the label it actually sets the focus to the next control and not the label.
I suggest you either use a command button and set its properties so that it looks like a label.
this way it will be able to get the focus and open the form or carry out an action when a user clicks on it.
you would use the onclick event of the command button and add some code like.
docmd.open acform "name of your form"
check the help for syntax.
hope this helps
ian