Thanks for your post. SQL Prompt 4 isn't compatible with 2012 so you're not going to get it integrated within SSMS 2012.
You are going to need to upgrade your existing license, which the sales team will be more than happy to assist with. It will be cheaper for you than purchasing a new license outright.
If you want to upgrade, please just send an e-mail to firstname.lastname@example.org
and we'll be happy to help.