Auto Login after Registration

I have a project in Joomla 1.0.15 that uses AEC([login to view URL]), Community Builder 1.1, and JACL Plus Pro. I need a coder who is familiar with all of the above softwares, that can modify this current configuration so that after successful payment through AEC that it will auto log a person in using the username/password they provided, and then GIVE ME the option where I can set the url it redirects to thereafter. Now this is important, the url the website redirects to can be in the code, it does not need to have a GUI, it can be plain and simple in the code, I just need to know the file and line where I can change it. Now I want to give a warning to those people who will assume that they can just modify the com_registration with examples listed in the Joomla forum, it won't work I have already tried. Because AEC takes over the registration process, it must be a call somewhere in there, I am not sure but that is why I am hiring this out. For someone who really knows their stuff about Joomla this should be a breeze, and probably only take 10 or 15 minutes, because I have seen examples where it is as little as 1 to 4 lines of code put in the right place. I do not see this costing more than $50 but when I go with the person I want to do it, I will pay a 10% bonus upon the agreed price if it is completed in less than 24 hours. So to summarize: 1. I have a Joomla 1.0.15 website with components AEC, JACL Plus, Community Builder 1.1 installed. There are others that I do not mention because I believe these are the only ones that have to do with the affected registration process. All of these have been integrated with each other. 2. I need the programmer that I hire to modify whatever code where ever it is so that after a successful payment in AEC that they will be automatically logged in. 3. I also need the ability to set the url that the website redirects to after the login. Thank you, Lee Erickson