I'm not sure you're going about this the right way at all Jeb.

So far your site is just full sized PNG images
No text at all.

You really ought to be creating such a site from a mixture of (friendly searchable) text, JPG (for photos) and PNG images.

Each 'page' should be seperate and linked to the next/last rather than stacked in an ever increasing scrolling page which may end up several kilometres in length judging by your comments.

And no, Xtreme will not allow such page dimensions to continue catering for this modus operandi.

Have a look at Gary's Workbook (68) over at the Xara Xone and download the zipped tutorial..