problems with transparent textures

im tryin to drape a texture of contours onto my terrain. and im settin the alpha (opacity) to 0 when the R,G & B values are 0. just before binding, the values are right, but when its draped it doesnt show as transparent. could anyone tell me what could be goin on. heres some code : (VB6)

blnIsOpenglList = glIsList(intI * 100000001 + intK * 101 + intJ)

                        'if so then render it
                        If glIsList(intI * 100000001 + intK * 101 + intJ) Then
                            
                            'set the depth function to always so that the image is above everything
                            glDepthFunc cfAlways
                            
                            glPolygonMode faceFrontAndBack, pgmFILL
                            glColorMaterial faceFront, cmmAmbientAndDiffuse
                            
                            'enable 2D texture and color material property
                            glEnable glcColorMaterial
                            glEnable glcTexture2D
                            glTexEnvf tetTextureEnv, tenTextureEnvMode, tepDecal
                            glBindTexture glTexture2D, TEX_DRAPE_IMAGES + 101 * intI + intJ
                            
                            'call the DL
                            glCallList (intI * 100000001 + intK * 101 + intJ)
                            
                            'disable 2D texture and color material property
                            glDisable glcTexture2D
                            glDisable glcColorMaterial
                            
                            glDepthFunc (cfLess)
                            
                        End If

thank u

did you enable blending?

And what do you set for the glBlendFunc ?

Originally posted by Aeluned:
did you enable blending?
YES.

Originally posted by mithun_daa:
[quote]Originally posted by Aeluned:
did you enable blending?
YES.
[/QUOTE]kkkk i fixed it. thanx guyz