Need someone to fix my pop up windows

[MrWorldWide]

I need a pop-behind window to open when someone hits my forum, a sponsor url. I've had someone add the code for a popup, but it pops up way too often. I just need it to pop up ONCE, when a user opens the site. If you can do the job let me know. This is an adult site, so if adult material offends you, you might want to skip this one.

 

[siONtI]

I think you can use Ads Manager 2 by @Siropu ?

 

[MrWorldWide]

hmm it appears this has been upgraded since the last time I looked at it... if it works then I should be good to go! Thanks for the link.