5
Hi,
First, when you play with database, you should DO BACKUP FIRST!!!
It should be table PREFIX_stories and the "storyid" value where PREFIX is the prefix you selected when installing xoops. It is autoincrement value.
Check if you control panel has an option to edit it.
If not, you still can change it with SQL command: ALTER TABLE tablename (this will be PREFIX_stories) AUTO_INCREMENT=*** where the *** is the next value you want.
And again DO BACKUP FIRST !!! If you are not shure about it, better don't do it, or try it on a test system first.