Help hooking Windows API functions

[JaVinci]

Hi, everybody! I need help... I'm still trying to develop a kind of a firewall for WinNT/2K/XP, in C++. I'm using a program that hooks Windows API functions and it works reasonably good. The way it hooks Windows API functions is injecting the dll to every process using CreateRemoteThread(). My problem is with two functions: accept() and listen() aren't hooked (I've tried to hook them from WS2_32.DLL and WSOCK32.DLL), altough the code I've written should be hooking them (I've hooked lots of API functions the same way without a problem -CreateProcess, ExitProcess, send, recv, etc..-), but I don't seem to be able to hook those two functions. Do you have any idea of what can be the reason for this? Thanks a lot to all in advance. Regards: Javi.