right now I'm manually building the form..I've already:
- successfully implemented PayPal transaction using IPN
- made primitive price calculation, using jquerry scripts
- write user-input into a database using PHP and mysql
what's left? form validation + tool-tips.
i'm planning on integrating the self-made form into some wordpress page. Only registered and logged in users will have access to this page.
It was pretty hard and the code will be hardly manageable in the future but for now it's all good.
If I had spare two years of time I would have created a wordpress plugin ;)