Mac vs PC

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desembalar Mac: http://www.youtube.com/watch?v=PHHktIaeDqg&feature=related
Imovie: http://www.youtube.com/watch?v=6_0sM_xwJBM&feature=related
reiniciar Pc: http://www.youtube.com/watch?v=gQ6lxVEEjS4&feature=related
seguridad de PC: http://www.youtube.com/watch?v=xjCkwl_ys5Y&feature=related
asi funciona un PC: http://www.youtube.com/watch?v=jI83T-WII_E&feature=related
viruses: http://www.youtube.com/watch?v=hQR5C3RUvPQ