what will happen ? if we travel in light speed in an ordinary space shuttle( which is impossible)?

we'd probably die, cause the space shuttle wouldnt be able to take the strain.

Traveling at c is impossible. You can't ask "Bleh is impossible. What happens if I bleh." Well, you can ask, but it's not science.

Our (m)(as)s would be left in the dust!

Earf!

if the ship didn't fall apart, time would slow down for us and we'd basically be traveling into the future much quicker.

(of course our mass would be infinite and we'd need an infinite amount of power to get moving that fast)

Einsteins theory of relativity.

http://www.youtube.com/watch?v=V7vpw4AH8QQ&feature=related

this dude, Ron Mallett is on his way to make a time machine.
http://www.youtube.com/watch?v=GHC8z6ULs18

it is possible but ........... still it seems that we will be as fast as time so we will go into the future

It is impossible as you say but as the speed of light is approached the dimensions only in the direction of travel contract such that the spaceship (including passengers) would become a pancake in the forward direction. However, occupants would not be aware of the contraction and everything would look normal to them. After arriving home after a long trip near the speed of ligh a passenger would be noticeable younger than his/her twin (especially if they had accurate calendar watches to compare). Thy passenger could also boast of having had almost infinite weight (mass) and an almost infinite weight reduction.

Time will slow relative to the Earth but on board time will appear normal for the travelers! Time will appear to speed up on board relative to Earth bound observers! I hope I have that correct! When they return to Earth they will find the Earth has progressed far into the future! Yet the travelers will have not experienced as much time progression!