IAS Extension DLL

Hi, anyone has developed an IAS extension, for authentification in a custom user database? I am tryng to do this ting but, i have a problem deciding if the user should or should not be allowed to login into network. The problem is that regardless of the decision i make(setting the pfAcction to Reject/Accept), the IAS does his own decision algorithm.
[351 byte] By [BadGhost] at [2007-11-17 14:30:07]