Pop up reminder

Hello Guys!!!

I'm new here and I need some help with my code, right now i'm trying to have a POP UP Reminder in my excel. and I made the following code:

Please Login or Register  to view this content.

its already working but the problem is once the Message box show up it will remind you all the deadline and it won't stop showing. can anybody know how to stop the looping of the message, I just need to show it once the workbook is open.

Thanks in Advance,
Ray

if you delete this code:

Please Login or Register  to view this content.

it works fine, but I need the additional info for my reminder, hope someone can help me with my problem.

Thank you!!!