I have my board closed right now awaiting some clear instructions. Please provide details for those of us who do not do this but once every couple of years.
Step by step would be great.
A test installation of your forum using a test database in a test directory will also be valuable to you. I have found it best for me to set up a test forum and do a dry run first to identify issues before doing so on my live forums. Prevents whoopsies, inconveniences and emergencies. It also provides you with time to make tweaks and adjustments.