Quote - Is there a way to convert our use the P6 materials in Poser 5 or i wasted my money and i have to apllied all the texture in manual mode (such a hell!!!)

If the materials are supplied as MT5 files, then just goto the Material room and apply them.
As P6 added/changed some nodes then there is a chance that they won't work, but only if they use one of the new nodes / settings.

If the files are MC6, then I believe it's possible to convert them to MAT poses with a text editor :-
Change the version number to 5.
Replace "mtlCollection" with "figure".
Change the extension to PZ2 and move to a subdirectory of the Pose directory.

There is no way to convert node based materials for D|S.