How will D/L will work in cricket?how they will calculate and how they will declerd?

You get this disappointing bird form this guy.see.sorry, its a complex formula based on how many balls bowled versus how many wickets are lost then they factor into it the reduced overs.and you get the picture, l am sure if you Google it, you can read it all in its glorious entirety for yourself!
Apparently the link above is a virus. Loser.

This will give you an idea about Duckworth-Lewis.
From Wikipedia
http://en.wikipedia.org/wiki/Duckworth-Lewis_method
from cricinfo
http://cricinfo.com/database/ABOUT_CRICKET/RAIN_RULES/DUCKWORTH_LEWIS_1999.html

It is quite simple really
1. Take the total number of runs scored,
2. Divide that by the number of wickets taken,
3. Add the number of overs bowled,
4. Multiply that by the ages of every player,
5. Subtract the ages of the players wives,
6. Times that by the square root of the players kids,
7. Minus 100,
8. Add 100,
9. Divide that by the first number that comes into ur head,
And most important of all.
10. Ask someone who knows what they're talking about!

:) u have to visit icc official site to know how its work