I'm a little late to this party but the guy shouldnt be charged with a crime and I dont know what state this happened in but most states have community property laws for married people which means whether he bought it or she did the computer belongs equally to them both.
As to custody, well, I'm a father to two wonderful kids and I have primary custody of them. My ex gets to see them on weekends and school breaks but for the most part they're with me. Courts have changed. Most often times the guy bitching about not getting his kids either (A) pissed off the judge in the custody hearing or (B) failed to appear to court for custody hearing. Judges do not want to take kids away from parents for the life of them, so unless they're in danger, being neglected or abused, its pretty much equal in terms of custody for both parents, the tie breaker is who could provide a better home life for the kids
My ex's own parents have told her she should give up what custody she has of the kids and I still cant get full custody because she hasnt done anything to seriously harm them.