URGENT HELP NEEDED....for newby

[5IVEO]

Ive tried installing a new skin today for my forum and obviously somethings either not worked properly or ive made a hash of things...probably the latter tbh, but the problem is that now i cannot access my board OR the admin CP, is there anyway i can get back into it?? it says database error but i just cannot do anything. Ive contacted vbulletin but obviously its a sunday so there not gonna get back to me in a hurry.....has anyone any advice...ps...i hopefully shouldn't have lost anything should i?

this is what im getting when i try logging in:

Database error in vBulletin 3.5.4:

Invalid SQL:
SELECT userid, username FROM vb_user WHERE vb_userid=62;

MySQL Error : Unknown column 'vb_userid' in 'where clause'
Error Number : 1054
Date : Sunday, August 13th 2006 @ 09:02:20 AM
Script : http://www.ukiron.co.uk/index.php
Referrer :
IP Address : 88.109.73.221
Username : 5IVE-O
Classname : vb_database