Hi Ralph,
 
That's a big can of worms you've opened with this question, almost as big as the Panzer Yellow  
 
There are loads of options and it will sort of depend on what works for you.
 
1)  Use stretched strue, can be awkward to measure the lenghts required but is cheap.
2)  Use steel wire instead, roll it out on a flat board to iron out any kinks.  I have used this method quite successfully myself.  Glue with superglue or white glue (PVA) or Krystal Klear
3)  Use invisible thread (also known as nylon thread or invislble mending thread) of a suitably small diameter, this will require pre drilled holes.
4)  Use lycra thread instead of the invisible thread, also requires holes.  I've been trying this on a Pfalz D.III with some success.  Is slightly more resilient to handling by the modeller once complete.
 
http://www.aircraftresourcecenter.com/
under the Tools N Tips section has some articles on rigging which may be worth looking at.
 
Good luck
 
Peter