Roy, thank you for your reply. I have BioPython installed on my box at work and have been browsing through the code in there, some of which I can follow, and most of which will take more time and experience for me to do so. I have considered BioPython and databases, and have chosen to forego those routes for the reasons above, here summarized: this script has a limited scope of what I hope it will acheive, and it should be as convenient as possible for the end-user to execute it (even at the expense of convenience to me as the coder). Again, thanks for your input, though. It's very helpful to me to be able to learn from other perspectives that I wouldn't have seen from, myself.
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