Write an Android application

Good day I have programming skills but i'm not good at java. I need someone to build an an instant messaging (chat) system that is compatible on andriod, iphone, ipad, blackberry, nokia devices and PC (Mac is optional). Features: - The mobile application should be able to talk to the PC application and vice versa. The mobile applications do not need to talk to one another. So communication is from Mobile App to PC and vice versa. (NOT mobile to mobile) therefore making this even more simple than it is. - Chat history saving - Chat text only limited to sending text and picture, no video or audio - Chat categories - Multi chat So this will almost be like the 'Google Hangouts' application Mobile and PC versions and how they talk to each other, only not with all the extra features.