take all the forum files out of the forum folder and place them into the web root keeping the file structure. then run the following mod to change the script and cookie settings to reflect the folder change
Download Auto Cookies MOD
then, unzip it to your computer,
then upload the included install folder, to your phpbb folder on the server.,
then , in your browser, go to:
then click the button to accept the settings it finds.
then delete the install folder.
Then you and all your members MUST
do the cookie dance:
clear your browser cookie
clear your browser cache/temporary internet files
close your browser
go back and test