Q: Can I change the name of my Guild?
A: Yes. If you just made the guild, and made a small typo, I will fix it for you, if you contact me within 24 hours of creating your guild. If it has been more than 24 hours, you can get a guild name change for 1000fg. If you just recently changed ownership (see above), and would like to purchase a Guild Rename, it will only cost 500fg. Please note that IRC is not included in a guild rename.
https://forums.d2jsp.org/info.php?p=5