I have to recall an "ugly" aspect of the W800i. I said that "You can only take video clips of +- 20 seconds in length.".
I found the configuration option that disabled this. It was labelled as "Record video for MMS". Disabling this enables videos of proper size and any length (up to a maximum of the memory stick).
On a technical note, I've been posting technical articles to the Portland Pattern Repository - TimTwelves as opposed to on my blog. I like the idea of JRoller but maintaining two blogs would be a nightmare as i'm not inclined to write more than a few paragraphs once a month.