Convert Sales order in Excel to Automatic Email

We have a simple sales price list with columns as follows : Category_code, Source : categories sheet first col Part_number , A string containing hyper link Description , A string Category Description, Source : categories sheet based on the category code Price 1 : if part number is empty copy from category sheet : column price 1 price 2 :if part number is empty copy from category sheet : column price 2 price 3 :if part number is empty copy from category sheet : column price 3 Order Quantity : default 0 , if value >0 , multiple price1 or price2 or price3 ( depending on the volumes in categoy sheet ) by Order_quantity into Item_cost Item_cost - result field Comment : text Calculate Sub_total after each change ( Excel) If Sub_total > parameters.Free_Sheepment_minimum_order Shipment_cost is Zero otherwise = parameters.shipment_cost Total Cost = ( Sub_total + shipment_cost) * (100 + parameters.vat_percentage)/100 Near the Total_cost add a button "Make_Order" . The button will create an Excel report containing all the lines with Item_cost > 0 plus all the summary data. This Excel report should be sent automatically to the email address in parameters.send_to email address. The email title should be taken from parameters.send_to_email_title The top part of the price_list sheet must be fixed and include another copy of the "Make_Order" button. The summary part of the price_list sheet must be float and appear all the time at the bottom of the screen even if its in line 5000.