JustAnswer module for Joomla 1.5

I use SimAnswers ([login to view URL]) for Joomla. This module should work with SimAnswers. I would like a component or module that can reside on my frontpage that works just like the frontpage ask module on JustAnswer.com. This module may require ajax programming. It should have a field to fill out the question, a field to pick a category (The category list should pull from the category list (mySQL) setup for SimAnswers component, etc. I would like it to go through the same process as JustAnswer does when someone asks a question. After user fills out question and category it passes values to the next page. The process should go as this: 1) Ask the question 2) ask for email address & pick if they are a returning user or a new user. 3) if returning user, login password field pops up through (ajax) like justanswer and if a new user is chosen then it pops up the rest of the registration fields like just answer does below the email field in ajax to complete registration. After the user registers, if a new user, then it will log user in and then post the question. Please test out the demo of SimAnswers at [login to view URL] to see exactly the process of asking a question so you may understand better what is required