hello sirs

i am relatively new to database applications,
i have one problem

in my database , i have one table called currencies

table --> currencies(from_cur(primary key),to_cur(foreign key),exch_rate)

it is a self refeencing table . means to_cur (FK) reference to field from_cur(pk)
of same tabel

so , my problem is how to insert in this table

please give me answer in sql(t-sql) format

please reply soon...

sandeep chauhan