Note that many websites have their own advertising, unrelated to adware.
An ActiveX control that downloads and installs files. Used by ispdialer.com (now nocreditcard.net) to install premium-rate diallers, generally for porn sites.
This is a pay-per-month pornography site.
Open the 'Downloaded Program Files' folder in the Windows folder, right-click the 'acx_install' entry, and remove it.