What time of day/night will you be there? Do you have Israeli citizenship? (then you would not need a visa) In how long are you flying? From when I last looked into this, it should not be so much for a one day - to 30 day, visa. Where were you thinking of getting the visa?
I lived in Moscow for a few years and I would suggest going in to the city maybe. I can give you places, ppl etc. There is a cheap, possibly free based on airline carrier, train that takes you into Moscow. I can maybe get you a great driver for cheap, with a nice car.
What else? It is a nice airport. Avoid Sheremetyevo 1 at all cost, so they say. It is notorious, rated the worst airport in the world.
All the best!