Thanks for the replies. I am using the ANET plugin for multi-player and seeing I am trying to work on a mmorgp game, I need the client to do as much as possible rather than asking the server. If there was something I could code into the engine saying something like....

ent_create("brick_wall.mdl", vector(x,y,z), 4300, NULL);

and the 4300 would be in bytes that gives or takes 500 bytes of the file size, I think I can solve this issue. It may not be the best but this is what I have. Either that or someone was mentioning the pro version...which I don't have as I use commercial. If you say that I can buy PRO and extract my game resource files to be encrypted so no one can change them, then this will work too. Can someone clarify that? Thanks.

ps: maybe another way would have a password box in med when you save your .mdl file, and when the 3d game studio opens it using commands such as ent_create_secure(...), you will have to enter that specific password. This way if the pass is not matched, the engine shuts down.

By the way, ANET is the MAN when it comes to programming multiplayer games. I got every client using at MAX 2kb of bandwidth, and on average 700 bytes per second.