Arranging tab menus created by views module
You can provide a weight while editing the Views tab:
. Higher weights will be moved to the back of the order. But since you cannot see the weights of the other tabs this can take quite a while to get right. 

Better is to have a look at Tab Tamer


  Tab Tamer is an administration utility that provides easy re-ordering,
  hiding, and deactivation of tabs and subtabs. You can also rename tab
  labels.