Back Office Database System

I need a database designing and building. The database will store about 100,000 records, each record will have the following data: Date Invoice No Invoice Name Invoice Company Address 1 Address 2 Town Country Post Code Telephone Email Shipping Name Shipping Address 1 Shipping Address 2 Shipping Town Shipping Country Shipping Post Code Shipping Telephone Amount Discount Shipping Cost Total Payment Method Payment Notes IP Address Order Status Voucher Code Notes Qty* Product* Price* Amount* The final four items marked * could have around of 30 items (although this is unlikely with the normal amount being about 5) I need the ability to insert new records via a spreadsheet which I wish to upload via a web browser. I need a frontend building for this which will give me the ability to be able to: 1) allow multi user log in 2) search the database based on any of these fields: Invoice No, Invoice Name, Post Code, Amount 3) list records by date range 3) list records by Invoice No 4) update/modify the fields from a web browser 5) send customer an email from a pre defined email template I hope I have explained myself, but if you have any further questions please let me know. Many Thanks James