[bug] Weight Based Shipping

Hy my friends!
I'm a newbie here and I have a big problem. I activated, associated and done evrithing but the web based delivery does not appears on the chekout page.
Then, I tried different, but none of them worked.
I remind you that I activated all types of shipping and associated to the products, zones etc.
Please HELP!

Sorry for my bad english !

did you set the product requires shipping?

did you put in the shipping rates?

Did you goto cart page and click update and then checkout again to clear the session?

Now it works. I really don't know what war wrong. I believe thate the rates were wrong. Thanks anyway...