How Can I Insert A Pop-up Window?

[jmsmrtn98]

I have tried to insert a pop-up window on my main page in vain. When I upload nothing displays.

I would therefore like to seek assistance from any member that can guide me, through this forum, on how to go about it successfully. I need a pop-up that displays once.

I will be grateful for your support. Thanks in advance for your cooperation.

[wjleong]

nowaday people hate pop up, why you still want to pop it ?