BlackBerry to iPhone migration - app development and developer training/support

We are beginning the process of porting our BlackBerry telephony application to iPhone. The BlackBerry app was developed initially by a third party who assisted us in becoming self-sufficient over a period of time and it is now largely developed and maintained in-house. We wish to repeat this model with iPhone and so need help with the following: - setting up the iPhone development environment - understanding the reality of developing and approving iPhone apps and of distributing them to corporate users - assessing any challenges we will face in replicating the BlackBerry functionality on an iPhone - initial development of the iPhone app to a spec The work will probably be a mix of hourly-based consultancy and project-based/fixed deliverables. We would prefer to work with a single individual with fluent English and probably a sole operator with experience in developing apps on the BlackBerry and iPhone, preferably with experience in telephony and in pushing data to a device. At this stage, we are simply looking for expressions of interest and an indication of hourly rates rather than specific bids for all the work. We will then liaise with a small number of respondents to complete the selection process.