A quite simple way would be to have your logo or whatever
in a cell or range, then have the disclaimer in a cell
comment.
An alternative might be to create a Userform. You can add
a timer so that it unloads itself after say 1 second.

You could use the sheet's SelectionChange to test if the
logo is selected then automatically open the form.
Say you logo cell/s are range named 'MyLogo' set the
sheets' event thusly:
Private Sub Worksheet_SelectionChange(ByVal Target _
As Range)
If Not Intersect(Target, _
ThisWorkbook.Names("MyLogo").RefersToRange) _
Is Nothing Then
frmDisclaimer.Show
End If
End Sub

add a userform, name it 'frmDisclaimer' and add this
Private Sub UserForm_Activate()
Dim T As Double
T = Timer + 1
Do
DoEvents
Loop Until Timer T
Unload Me
End Sub

Now when you click the range, the form will show for one
second

Patrick Molloy
Microsoft Excel MVP
-----Original Message-----
Hi there,

I've put together a small Excel program that calculates
foreign exchange rates. I would like to add a disclaimer
but rather than simply adding a text box to my worksheet
(thereby increasing the size of the worksheet) I would
like to add a hyperlink that when pressed opens a small
pop up screen showing the text of the disclaimer. When
the
mouse is cliked outside the pop up box it disappears. Is
this possible and if so how is it done?

Cheers,
D
.