How to SELECT and UPDATE in one query using Different Tables in sql server?

IF  EXISTS  (SELECT 1   FROM    InsCarrier  WHERE   (InsCarrierId = @InsCarrierId))
        UPDATE  InsCarrier
        SET     UserId = @UserId,InsCarrierName=@InsCarrierName
        WHERE   (InsCarrierId = @InsCarrierId)
    ELSE
        INSERT  INTO    InsCarrier  (UserId,InsCarrierName)
                        VALUES      (@B2bUserId,@InsCarrierName)