Family is every thing in this world, No family No Life....

Friend,

You have to prepare the following doc.
1- Your wife's passport(copy)
2- Marriage Certificate ( Attested by Your Embassy and Qatar foreign affairs)
3- Your kids Birth certificate and passport ( copy)
4- Your academic certificate ( Attested by Your Embassy and Qatar foreign affairs)
5- copy of your ID and passport
6- Kahramaa Bill
7- Salary certificate of Min QAR 7500/-
8- Salary Transfer statement for 6 months. If not available get the company payment voucher dating for last six months signed by sponsor.

I Hope I didn't miss any thing....

Good luck!!!