ass salaamu alaykum,

how to increase concentration in prayer???...make isti3aadah from the shaytaan by lightly spitting your left shoulder...
every one's minds tends to wander sometimes in the salaah, i remember a hadeeth about a sahaabiy sayin' how he used to prepare the postion of his army on the battle field...(along those lines)
some one correct me inshaAllah!

wallaahu a3lam