37-year-old Joshua Burley of Billings has been convicted of sexually abusing two young girls seven years ago.  Burley was found guilty of two felony sex crimes against children, who were 5 and 13 years old at the time.  He could be imprisoned for the rest of his life with a parole restriction of up to 50 years.  The Billings Gazette reports police began investigating in 2010.  They reported multiple incidents of rape and Burley tried to record one girl taking a shower.