Uploading Images on Picasa from MY IOS appliaction in a specific Album?

[rausha...@gmail.com]

I am working with an IOS application in which i have to upload images in a specific album from my IOS application. currently i included GData.xcodeproj in my application and do the remaining steps.I can access every file in my application.Now the problem is i don't know how to authenticate with username and password ,and which method os used to create album and insert my selected images from my application.

I am new to the IOS,trying to learn so getting small difficulties.

Please help me from this problem

Thanks for your precious time.