Hello, I'm going to copy and paste my response to this thread in Resources. I think it is relevant to what you are searching for! The thread is here ( http://www.freemmorpgmaker.com/thread-85433-post-942572.html#pid942572 ) This may be a stretch (since its not VB6 and not EO related) but you could use NeonCube. https://rathena.org/wiki/NeonCube It is used for custom Ragnarok Online servers, and does a very good job of updating properly. However you will need to build a grf file (it could be as small as you want, it's basically a fancy compressed file that the patcher needs to accept first). The setup is quite simple for it, and one can skin it in many different ways. Hope this helps! ################# **Edit: I believe vbgore has a server/client updater packaged with its engine. This should be VB6\. You could probably re-purpose it for EO (vbgore is open source also~) Link below for your interest http://www.vbgore.com/Main_Page