PHPBB ERROR!!!!

[Northern Flame]

I tried adding a new feature to my phpBB forum from phpbbhacks.com

luckily, I backed up the files that I was going to be working on 

but I still would like the new feature added,

anyway, all I want to add is another little thing for people to fill in,

for example the default question on the instructions from phpBB hacks is adding

a phone number to your user profile.

Anyways, when I tried doing this I recieved an error message:

Could not update users table

 

DEBUG MODE

 

SQL Error : 1054 Unknown column 'user_mobile' in 'field list'

 

UPDATE forum_users SET user_email = '(MY EMAIL ADDRESS)', user_icq = '', user_website = '', user_occ = '', user_from = '', user_interests = '', user_mobile = '' , user_sig = '', user_sig_bbcode_uid = '', user_viewemail = 0, user_aim = '', user_yim = '', user_msnm = '', user_attachsig = 0, user_allowsmile = 1, user_allowhtml = 0, user_allowbbcode = 1, user_allow_viewonline = 0, user_notify = 0, user_notify_pm = 1, user_popup_pm = 1, user_timezone = 0, user_dateformat = 'd M Y h:i a', user_lang = 'english', user_style = 2, user_active = 1, user_actkey = '' WHERE user_id = 2

 

Line : 531

File : usercp_register.php

 

I tried looking at the file usercp_register.php

and on line 531 I saw nothing wrong. I reviewed everything and

if the instructions from phpBBhacks.com do work, I did everything right.

Can anyone let me know how to fix this problem OR how to do this

correctly?

 

This is the link to the instruction from phpbbhacks.com

http://www.phpbbhacks.com/download/5249