Blom0344,
No problem at all. Here's what you need to do...
Firstly, open up the VBE and go to the Insert menu, and insert a Userform. This should be called UserForm1.
Then add your any TextBoxes, Labels etc to the form, and then type your text in to the text box. Make sure you change the Multiline property of the text box to 'True'.
In the workbook_open event, add:
UserForm1.Show
to open it
To close it, maybe add a CommandButton to the form and add:
UserForm1.Hide
to its click event.
If the text you wanted to use was stored in the spreadsheets cells, or maybe got updated automatically etc, you could always pull that to the textbox on the userform.
i.e.
Private Sub UserForm_Activate()
TextBox1.Text = Worksheets("Sheet1"

.Range("a1"

.Text
End Sub
the above is assuming your text is in a1 of Sheet1...!
Anything else, just reply back to this thread.
n.b. using simple userforms are quite handy for using as a password login, as you can apply a password character to mask the input.
Regards,
Mudstuffin.
p.s. I keep an eye on the threads that I've been involved in as it appears in 'My Threads' so no need to start a new thread. It's better like this as you and other users can see how problems get solved form start to finish, and how they can lead on, and essentially, this is still the same question, just a different way of going about it.