Iphone App - Search function, search by radius using zipcode

i want an iphone app that does the same basic search as this site: [login to view URL] I dont have access to the source code for this site, but i can get you the data you will need to let me know what fields your looking for, i can get small sample data then you can tell me from there going forward the data required to make this i need the search by radius search by organization name search by person name search by primary organization function I have a developer account, i can get you a database setup on a server with a folder to put web services files