On Stack Overflow, there are quite a few questions, such as https://stackoverflow.com/questions/7658399/adding-checked-products-to-a-custom-php-basket (10K link), where the OP wants you to implement things for him/her, without really asking a question.
So, when you face this problem, there are two solutions:
- Do the work yourself, and add a specific question if you happen to have one, like Pekka suggested:
I suggest you try for yourself [implement the feature / fix the problem] and come back if you have specific, answerable questions
- Go to a website designed for this purpose.
Do you know if such a website exists?