PHP chat/server side job

PHP job description: - database fields and little PHP code required for "iphone gps based social networking application" - instant messaging feature: this is main job here. making possible instant messaging (if you wish I can send you fully working PHP4 instant messaging project that i was work for other project and have all source. This time case was be: one man do with PHP server side and other man with C/C++ interface. Now is very similar, but instant messaging was much simpler.. in this application it was be too much professional features added on top of normal messaging) - "be here" and manage all possible server side requirement that iPhone programmer need on 'other side' more details on MSB Note: some parts are done budget: $400