Bread-Bakers v001.n025.2

Hello -



Does anyone out there know of a mail order source for gluten?  I have
not had any luck with finding bread flour.

Also, it seems that some people substitute self-rising flour for bread
flour. Does this work?  As I understand it self-rising flour contains
baking powder and is more appropriate for non yeast breads.

And one last question, I do have a local source for semolina flour
(hard wheat flour for making pasta) can this be substituted for bread
flour or is the grind different?