phpMyadmin query help

[kh99]

#1142 - ALTER command denied to user 'nextgen6'@'localhost' for table 'clan_games'

This error is showing that the problem is permissions and not the query syntax. Do you have access to the Execute SQL Query function under the Maintenance menu in the admincp? If so you could try it there. If not, then you need to talk to someone who can adjust the permissions (if that isn't you).

Edit: oh, well if you got the column added (as you mentioned below) then maybe it was the syntax, and it was misunderstanding what you wanted to change. never mind.