Save data in Mobile phone (J2ME)

Hello, I build a program for mobile phone in Net Beans 5.5, J2SE development kid 5.0 update 8, runtime environment 5.0 update 8, and I need my program have the ability to save the data in the mobile phone example: List Fields ----------- IdArticle Description Measurement Unit CodeSystem CodeSystemListPrice Please the code must be easy and clear, this list fields can change, or add fields. I need to implement this functionality in my program, the operation I need to do with the file is: create file - read - write - insert - modify the data, phone mobile like: Nokia 2330 [login to view URL] Nokia 2630 [login to view URL] Nokia 2730 [login to view URL] Nokia 3120 [login to view URL] Nokia 5130 [login to view URL] Nokia 6120 [login to view URL] and so on. I need this code works in any phone mobile I want to know the cost of your service, thanks in advance.