I'm assuming from your handle that you are located in Lome, but I could be wrong. Anyway, if that's the case see if the Atlas ground folks are still there and they can give you the low down on what you need to do.
CR2 pretty much sized it up so I refer to his post. As to tethering the nose gear to a push tug, at most places their a premium and if their sitting in front of your airplane the meter is running.
Cheers