OS 10.5 - home folder for nested groups

Hi everyone, am in deep ****,
ok, I have a Mac network, and windows network. There is active directory integration in the xserver. I got AD users that can log into mac network with their own AD credentials. But, I cant seem to get their home folder settings working.
At the moment, I have groups in Open Directory that have the corresponding AD groups as members. So, its nested groups. I can get the group folder working as well, but then I need to get a user homefolder for every single user onto the Mac server itself, and I cant seem to find any place where I can specify it.
Please help!!!