Help, how to anti-aliasing words

hello all:
I used ‘wglUseFontOutline()’ to add text such as ‘opengl program’ on my bitmap background as a title. and I want to make the edge of the font anti-aliasing.
I have tried ‘glEnable(GL_POLYGON_SMOOTH) and glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA)’, it seemed effective, but left the line of the triangles in the text font.
who can tell me how to clear the line of the triangles in the text.
or who know how to anti-aliasing words (make the edge of the words clear and smooth), please tell me .
thanks a lot.