Bitcoin address and private key generation into .CSV

[doghouse]

What's the best way to generate a mass of bitcoin addresses (with matching mini private key and private key) and export them as a CSV file (for further processing)?
I've tried the Casascius Bitcoin Address Utility, but the "save address list" option only saves the addresses, and there is no option to save the private key!

I'm working on a way to generate inserts for a sealed windowed envelope with private key hidden, but address visible. The private key is going to be translated into NATO phonetic alphabet to aid typing in.

Thanks.

[1715422406]

1715422406

[1715422406]

1715422406

[1715422406]

1715422406

[Severian]

Have you tried the bulk wallet generator at bitaddress.org?