urgent insurance!

[skettio]

hey guys... this is a little off the subject of equipment but related enuf i think.
i'm an australian resident and trying to find the most cost-effective way of insuring my new canon 20D, lens, flash etc. I will be travelling interstate with it and possibly early next year swapping from to nikon and travelling internationally. i know my home and contents insurance can cover it for domestic travel, but i will be using it for earning income, so that is not possible anyway on such a policy.
does anyone know of a good company to approach that perhaps covers internationally as well and any idea what kind of monthly premium i cld expect to pay?
leaving for interstate in 2 weeks so any info asap would be appreciated
thanx...