Verdex automatica login

Hello,

I would like my Verdex to login as root automatically - has anyone done this, and could they let me know how?

Ideally I'd like to do it without reflashing the filesystem, and anyone with tried-and-tested instructions would be great as I don't want to lock myself out and have to reflash to be able to log back in.  I have my Gumstix set up almost perfectly for it's given job, and I don't want to have to recreate it if I can help it.

Thanks