I understand time dialation well enough to know the faster you go the slower time gets within your ship that is, so my question is if you send a man on a round trip at close to the speed of light for say a ten yr trip he will arrive back some time in the future much latter than 10 yrs. the trick is calculate the trip time reletive to how far in the future you want to go...am i on the right track? let me know

I think you are on the right path
You can travel into the future to meet your future (great, great, great, great, great.....n) grandchildren and in one special case I know of it may be possible to meet one friend from your past of 2004 years ago using these two relativity links.

Reading C- ship our sturdy craft (The Lorentz)
http://www.fourmilab.ch/cship/craft.html
This applet below lets you make your own time dilation calulations.

The apple(t)
The Relativistic Rocket Applet
http://ucsu.colorado.edu/~obrian/applets/R...ket/Voyage.html
lets you plan how long a trip will take on a rocket that travels near the
speed of light. You type the distance of the trip (measured in light years)
and the acceleration of the rocket (measured as a multiple of Earth's
gravity). The rocket will accelerate at that rate for half of the trip, then
decelerate at the same rate for the second half of the trip.
The time for the trip is measured in two ways: (1) As seen by a person who
stays behind on Earth, and (2) as measured by you on the ship. For your
convenience, space-sickness pills are available aft of the observation
lounge.
end quote..............................


For a one way trip to the the closest star at a constant 1g wrt earth to midpoint and decelerating at 1 g the remainder of the journey.

Trip length: 4.25 light years.
Acceleration: 1.0 g.
Time on earth: 5.8780560467144 years.
Time on ship: 3.544401860293398 years.

If Christ was resurrected after death and did ascended to the heavens on a 1 g rocket ship to visit his father at a 1000 ly distant star he could return today Obeying Einstein's laws some 27 years older and he might be ticked off so behave as:

Trip length: 1000.0 light years.
Acceleration: 1.0 g.
Time on earth: 1002.2235407106124 years.
Time on ship: 13.453214568643295 years.

For a one way trip to the edge of the observable universe measuring a constant 1g wrt earth to midpoint and decelerating at 1 g the remainder of the journey.

Trip length: 1.7E10 light years.
Acceleration: 1.0 g.
Time on earth: 1.7004884192539843E10 years.
Time on ship: 45.71651222563561 years.

Velocity average with respect to (wrt) earth =
17E10 light years /1.7004884192539843 years =
.99971277707718905089055716347216 C
Velocity average wrt ship
1.7E10 light years/45.71651222563561 =
371856888.73411523778926486148209 C

1 g acceleration wrt earth wrt earth Velocity = .99971277707718905089055716347216 C
Velocity average wrt ship = warp speed 371856888.7
which is also the velocity wrt earth when measuring the constant 1 g wrt ship.

__________________
Thomas Hulon Jackson
Scientist/Engineer/Technician