First Select Your favourite Image(JPEG format is good to work perfectly,other formats also can work)
Now Follow Any one of the following 2 ways:-
First Way
Copy Your Favourite Image
Open your Favourite Ragnarok Client Folder then open Data Folder
Now Open Texture folder
Now Open À¯ÀúÀÎÅÍÆäÀ̽º Folder
Paste the Image in it
Replace Loading00 image in that Folder and Rename your Favourite Image in it exactly To Loading00.
Now It Will Look Something Like this.
If you were successful in above steps then Now Skip the following way and just go to final Step or follow the following steps
Second Way
Copy Your Favourite Image
Open your Favourite Ragnarok Client Folder then open its Skin Folder
Then Open Default Skin folder
Paste the Image in it
Replace Loading00 image in that Folder and Rename your Favourite Image in it exactly To Loading00.
Now It Will Look Something Like this.
Final Step
Now What? Open your Client And Check loading screen after logging in.(click to view real size)
Hope this can help
sorry im bad in indonesia language