pushing records into temp table

Dear friends,
I am using SQLServer 2000. I want some help. I have created 2 tables of same structure named mon_sal, and yrly_sal where i am storing only current month salary details in mon_sal and while processing for the next month salary i am pushing all previous months salary details to yrly_sal because i want to store salary details of that current month in mon_sal table. Each month i'll process this.
I want to write a query where i can push all the records from mon_sal to yrly_sal.
Please can anyone help me.

thaning you
shruthi

Sounds like you want something like the following:

Insert into yrly_sal
select *
from mon_sal
where [your where criteria i.e. current month]