Wanted: Powerful ad network script

[Jak]

I'm looking around for an ad network scripts (think fastclick.com) and have found a couple of decent ones.

Before I make a choice on purchasing one I wondered if anyone here had any suggestions.

The script must be capable of delivering at least 1 million impressions per day, must be capable of delivering rich media, popups, popunders, exits, banners, etc., and must allow people to sign up for advertiser or publisher accounts. It must also be open to alteration, not closed and compiled code.

Thanks.

[kveldulv]

Here dude...

PhPAdsNew
http://sourceforge.net/projects/phpadsnew

[Jak]

Yeah I'm checking that one out but I'm concerned about speed issues. Can it handle millions of impressions per day without a slowdown?