Personally I prefr to storyboard at a shot level. I only do this on post-its mind you as I can't afford decent software and don't do enough films to justify anything expensive.

Its well worth the effort though as story boarding gives you a clear idea of how the final film should/may trun out.

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IBM A51p with 160Gb Boot Disk, 160Gb external Firewire Disk, 2Gb Memory and a super duper sound card, 17\" TFT Monitor etc etc etc
Sony TRV33e : Sony TRV310e : Canon XM2
ULead products mostly including Mediastudio Pro (V8.0), Video Studio 8, Movie Factory 2.0, Premiere Elements

Remember, there is always more to learn than there is to teach.