how create new entity in crm 3.0

Dear all

i am use ms crm 3.0 . i create new entity in crm 3.0. name of entity is bank. the bank entity have attribute like custid_id, name address .. ect .

i need the cust_id auto increment like that c_000_01 ,c_000_02 ..

pls give me advise. very urgent

with regards

sivam

[621 byte] By [SIVAM] at [2007-12-25]