Hi Amith,
it is always good to search in Google before posting .LSMW is very old topic and i am sure you will get lots of Documents on this .Please go through the below link .you will get some idea on this.
http://scn.sap.com/thread/1012472
there are 14 steps in LSMW and it is same for all (master data and Transaction Data)
Pls practice this in your sand box or quality system before working it in the client requirement.
Hope this helps to you
Regards
Sundar