You can not have 'Time Travel' if 'Time' does not exist at all.You may have seen in the news the information about someone in Israel coming up with the design for a "Time Machine". The main problem is that 'time' doesn't work that way. Secondly if that method of 'time travel' did work, then the operator of it, in the future, would have came back and told the designer that his idea worked. :-)
This is more along the line of how 'time' works: http://discovermagazine.com/2007/jun/in-no-time
Take a look at the "Many-Worlds" interpretation of quantum physics if your interested in how 'time' works, then take a look at an obscure paper by T.E.Bearden about "Virtual State Engineering and its Implications", at Unusual Research.
If hyperspace navigators get paid by the hour, then what is the pay-scale in a place where time has no meaning?