Convert (PostNuke) Module to Joomla 1.5 Component

I have cars market place module built in PostNuke .65. I would like it to be converted to Joomla 1.5.2 Component using Joomla standard development practices. Add to that: * the current module is for one country only, i would like to extend it further to other countries. * Remove all hard coded design and utilize Joomla CSS instead. * I would like to use Ajax as improvement for the following functions: - Registration form. - Selecting the car make/model - Selecting the country/city Payment will be fully made when the module is fully functional on my Joomla site. There are several other improvements that i would like to do but we will make them as add on's later and we will agree on how much it would cost like the following: - Improve the search functions - improve the admin functions - make dealer accounts not only individuals. ...etc The current PostNuke module can be viewed at [login to view URL]