Help needed: Accidently bought semolina instead of durum flour
I had planned on attempting this recipe http://www.thefreshloaf.com/node/4213/semolina-sandwich-loaf  and mistakenly bought semolina from the bulk bin section of my local grocery store.
I am under the impression that durm is just a very finely grounded semolina.... if this is true, can I grind my semolina into durum flour? Will my new Country Living grinder grind the semolina fine enough? http://www.pleasanthillgrain.com/country_living_mill.aspx?gclid=CMrGv9Oj6bUCFadFMgodyBgA0w 
If my grinder will work, how fine do I need to grind the semolina?