Hooking Appinit() Anyone out there with experience in this area or with non-proprietary

Hi --as I uninstalled WindowBlinds -- which in my opinion straight up sucks... I noticed it removed entries to my AppInit section of the registry...I've some experience in dll attachment, and I was wondering if anyone knew of a good resource for modifying a client application's window creation...Although I understand somewhat how the .dll is loaded into the memory space of the applications upon initialisation, I was wondering if anyone else had pursued this angle, and/or would know of any resources online to this effect.I'm not just looking for any old Google link here either...In any case, I was looking otherwise for either an open source or GPL solution to this problem, otherwise I want to hack it myself...A few other notes - I understand that this "breaks" under vista or other 64-bit interfaces, but I'm not currently worried about that... This is mainly for personal gratification -- and I don't intend to sell any code developed...If worse come to worse, I'll just go through and hack it myself... any response would be appreciated... thank you