Data Entry Needed in Store

We are doing a promotion on our Interspire BigCommerce store and we need the following: 1. We need 1,000 unique voucher codes to be created. They need to be 8 characters with a mixture of upper case letters and numbers which are non-sequential. 2. We need the codes to be entered into our BigCommerce system and make them live. 3. We also need the codes listed in a spreadsheet. We need this completing within 2 days. Thank you.