Since I cannot supply my own folder I suggest you create your own. Or you can look for someone elses. But this will probably most up to date.

1. Install RO of any language that you desire and patch it up completely.

2. Download this tool here GRF Extractor and insert it anywhere you like.

3. Next make a folder in this filepath. Go to My Computer. Click on C drive. Create a folder in C drive titled "rodata".

4. Now go to your Ragnarok Online folder and look for the data.grf file and copy it. Then paste it into the "rodata" folder. Do the same with sdata.grf.

5. After data.grf and sdata.grf are inside C:rodata then run the GRF Extractor. Select open then select data.grf. And then select Extract All...

6. After the process extracts...in rodata there should be a data folder. But your not done yet. In the GRF Extractor open sdata and click Extract All again. This doesn't create two data folders but it overwrites the first one giving you the most up to date files. If you have more than data and sdata you can extract from them too but it just takes that much longer and that much effort.

7. Take the data folder that it has created and insert it into your Ragnarok Online folder. Either re-write the folder or just put it in there but make sure it is titled "data".

8. You have your very own data folder Now you can delete the copy of data and sdata in the rodata folder if you wish.