...probably flying, depending on price, but we might find another way...
The Timor sea isnt exactly renowned for pleasant 'walks on water', nor bamboo rafts. Fly would be your best option. When there though, take advantage of Ferries and the likes to do your island hopping.
Here is a Q' for the snobs. Nikon takes RAW files under 'NEF' format. On the computer Im using now, I do not have Photoshop, though I have Picasa (reads RAW), the NEF windows codec, Lightroom 2, as well as Nikon's own PictureProject. This was all good for basic conversions/edits when using my old camera but yesterday, when I came to actually retriving a whole heap of photos from my brother's deb ball, Lightroom and Picasa inverted all the colours and Picture Project wouldnt even recignise them.
Does the D40X and D90 take 'different' NEF files?