Al-qunut should come after the ruku` but if a person recites it before the ruku` that is OK. You should raise your hands to chest level and not raise them very much, and you should spread your palms (with hands together) and hold them facing up towards the sky.

It is preferable for him to repeat after the Mu’adhdhin, then make Du`a after that as narrated in the Sunnah, then pray Tahiyyat Al-Masjid (two Rak`ahs to greet the mosque).

It was narrated in some hadiths that the Sunnah prayer before Zuhr is two rak`ahs. In some other hadiths, it is narrated that Sunnah prayer before Zuhr is four rak`ahs (two-by-two).

A house will be built in paradise for every Muslim who offers twelve rak`ahs of optional prayer other than the obligatory prayer in a day and night, to seek the pleasure of Allah.