hello!!does anyone knows why autoCAD 7 can't render all my materials. is there something at settings to change..?

AutoCAD 7?  Do you mean 2007?Are these custom materials?

yes and yes..!!

Have you had problems in the past with custom materials not rendering?How did you create these custom materials?

at my house i have the 2006 and its ok with everything!! at my new work now we fixed the programmes for my pc , and from the start its wrong! i dont know what else to do?! we haven't buy it, its with crack! but i may be wrong with something!! all pick are used bofore without any problem!!

Let me see if I understand you correctly.At home you have AutoCAD 2006 (I won't ask if it is a legal copy) and your custom materials will render.  At work you are using a "cracked" (illegal) copy of AutoCAD 2007 and your custom materials do not render.  Is this correct?