Hose All User Memory On Sl5600: How To?, How to completely wipe 5600 of old data Options

[Windrose]

I'm a bit embarrassed to admit I don't know this, but how do I arrange to completely remove old user data, user installed program remnants, usw., from the memory of an SL5600? I thought I'd try one of Herr Hentges' special distributions, and I want to flash it to a completely "clean", so to speak, Zaurus.

If I try the contortionist Press-And-Hold-C-And-D-While-Pushing-Reset routine <http://www.oesf.org/index.php?title=System#How_do_you_flash_the_Zaurus.3F> I get the blinky lights thing apparently forever, but nothing seems to actually happen to the stored memory. If I select Format from the system update menu (after reset), nothing seems to actually happen. If I flash the appropriate Hentges ROM I get the usual slick install including his Blow_Everything_To_The_SD_Card setup (v. cute by the way), but Some Things Remain Behind. I know because I find programs that I'm fairly sure are not in the Hentges distro (such as Portabase) that I was trying out, and the Contacts database still has my personal contact info, which I'm also fairly sure is not in the Hentges distro.

So how do I make sure all that stuff is erased?