Thank you for taking the time to help me.
But yes that is exactly what i am doin. I have windows b yhe way. I download the PureBDcraft for MC 1.6.4 and then use af link from a youtube video for the addons for tekkit, I then copy all the files from the addon "asset"-folder in to the "asset" folder from the PureBDcraft site, and then manually (is there an automatic way) copy that folder into the Tekkit resourcepack folder. But the game does not recognise the folder, and it does not show as an option at all. I even try to zip the folder up, and put it in the resourcepak folder, but no difference.
if it is because i am using the wrong version or something, how can I make sure to get the right pureBDcraft for the new tekkit and the correct addons for the new tekkit? and how, og god how, do I put them in the resourcepak folder so that the game will recognise the folder as a tecsturepack.
thank you for your time guys