AS YOU DEPART
Please note that during customs  formalities at the Ukrainian border you may opt for the "green" channel - or the  "red" one. The "red" channel, where you will be asked for a completed customs declaration, is for passengers carrying over US$ 1000 in cash (or the equivalent amount in any other currency) and/or goods to declare. Otherwise, you may go through the "green" channel. Be prepared,  however, that a customs officer may ask to inspect your luggage. Please remember to   have your passport and ticket at hand.
The Hand Luggage Check-In Counter may be preferential upon departure for  passengers with luggage of under 7 kg, measuring not more than 55x40x20 cm (or, all  three dimensions added up, 115 cm).
The VIP lounge is situated to the right of the main entrance (Terminal C). It is designed to  bring comfort to those who value it and hate bustle. Here you will be offered a variety of  drinks, and we'll take the hustle out of the airport formalities for you, from customs all the way through to boarding.

AS YOU ARRIVE
While still aboard, you may want to fill in your customs declaration. Should you wish to make use of it in future, make it out in duplicate.
Luggage trolleys are available in the customs area hall (free of charge). An exchange bureau is in the same hall.

GREEN CORRIDOR:
Green corridor(without custom declaration form)
DEPARTURE:
1. You don't have:
Any prohibited items, such as explosives and weapons (except gas and hunting weapons officially approved by Ukrainian authorities), drugs, artwork, antiques, animals, antiquary and products of an animal and vegetable.
2. You don't have more then: Ukrainian hryvnyas in cash       Resident 175,
Foreigner 85, foreign currency $ 1000, Personal jewelry with value exceeding 200 euro.
ARRIVAL:
1. You don't have:
Any prohibited items, such as explosives and weapons (except gas and hunting weapons officially approved by Ukrainian authorities), drugs, artwork, antiques, and luggage sent separately.
 2. You don't have more then:  spirits - 1 liter, wine - 2 litres,
tobacco products - 200 grn,  other goods with value exceeding 200 euro,  Ukrainian hryvnyas in cash:Resident 170,
Foreigner 85,
foreign currency $ 1000

RED CORRIDOR:
are for people carrying goods or cash that must be declared.
It is important to save all documents you receive and fill out while going through customs, as you will need to present these when leaving Ukraine.
from Boryspil airport site.
 
The time of registration is different in each airport. In the airport Borispol it begins 2 hours 30 minutes and finishes 40 minutes prior to the departure. When you buy the ticket please ascertain the time of registration. Otherwise, Your ticket can be sold if you don't appear for registration.
First of all you have to pass the passport and customs control, then you have to follow to  the registering clerk to obtain the boarding pass with your place and to register your  luggage.
The boarding will be announced afterwards. When you hear this information you have to go to the gates indicated in your boarding pass, and there you have to pass the special control.  The country of your destination can have special rules, so when you buy the ticket ask the clerk about registration procedure in that country.
 
LOST & FOUND 
If your registered luggage didn`t arrive, you sould address a quest to the "Lost & Found" office, which located at the arrival hall. Phone: 7498, 7539; from Kiev 2967498, 2967539, from other towns 0442967498, 2967539.

REGISTRATION
Since July, 1, 2001 according to the Decree of the President of Ukraine "About Supplementary Measures Concerning Realization of the Human Rights for the Freedom of Movement and the Free Choice of the Commorancy " #435 from 15.06.01 the registration of foreigners who enter Ukraine in accordance with established procedure and the registration of their passport documents is realized only in check points at the frontier of Ukraine by the bodies of the State Committee on Affairs of Protection of the Frontier of Ukraine. Any further registration of foreigners who temporally and on legal grounds reside on territory of Ukraine, and the registration of their passport documents in law-enforcement bodies is not conducted. The registration of foreigners who enter Ukraine for permanent residence, studying, training and working is realized by law-enforcement bodies in accordance with established procedure (Appendix 3).

PASSPORT LOST
In case of losing national passport on the territory of Ukraine the foreigner must inform about this his (her) organization and the law-enforcement bodies which will issue the certificate of loss at his (her) request. After foreigner's receiving the national passport on the basis of his (her) personal application and the application of his (her) organization in the embassy or consular establishment of his (her) country the law-enforcement body solves the question of issuing visa for departing from Ukraine or registration of the national passport of the foreigner.

BORYSPIL AIRPORT HOTELS
Airport Hotel Boryspil *** is near to the "B" Terminal, and provides the option of accommodation directly at the airport.

March 2004 new airport hotel was opened in Boryspil.
It is located in a quiet district of Boryspil, at the distance of 9 km from airport, 18 km from Kyiv and 34 km from central railway station. There are 60 comfortable suites at the hotel.

* Info from the Bpryspil airport website