Changing forum variales via php in files

[Chunky Monkey]

Thank you, Danny.VBT. I am trying to share the same vb database at two domains (and will have two valid vb licenses, of course). I am able display all of the same forums at each domain by using the same config.php file, and log into the forum from both domains, but when I try to post from the "slave" domain (the one who's values are manipulated via php file edits), or create a new thread or send a pm, I just get a white screen. I have essentially achieved "read" access but not "write access" this way. Any ideas? Thanks!