again, thanks so much for helping me, i appreciate it so so much. xxx

I love the look. I haven't gotten around to exploring all its feature so I appreciate whaever information is available.

.singular .entry-content {
width: 100%;
}

Thanks so much for your help so far.

.blog #content, .archive #content, .category #content {
margin: 0 7.6%;
width: 85%;
}

.blog #secondary, .archive #secondary, .category #secondary {
display: none;
}

The above also removes the sidebar and resizes the content area on the categories, archives and tags pages as well since those pages will display the wider photos and if you do not resize them, the wider images will be either cut off on the right side, or they will break those pages.

More to the point is IMO your ought to read this comprehensive post on how Duster is coded to operate and how it can be tweaked. See here > http://wpbtips.wordpress.com/2011/05/04/workings-of-duster/

also, im not following what you mean by using 800px wide images in galleries? Images in galleries are only thumbnail size, regardless of the actual image size, as far as i could tell.

What i'm concerned about is getting images to be 800px wide on the blog and individual posts. Well, not only the images, the whole column, text too, do you know what i mean? I hope i'm making sense here...

thanks!

1. We cannot access your test-blog since it is password protected. Change the setting in privacy to "No search engines, but all others" (don't know the exact wording there).

2. Everything you want should be possible with the CSS upgrade AFAIK. The only thing is you should check out whether using 800px wide images in your galleries works out. At least in the attachment-view, they are not allowed to be bigger than 800px.

Hope, this gives you a first idea of what's possible. I can tell you more, if you make your test-blog accessible...

I am not yet using the Duster theme, but am working on redesigning my blog and love the look of this theme. What I would like to do is use their Showcase Page Template as my landing page (home) and then allocate another page as the blog, for the contantly updated posts. My question is: would it be possible, with the CSS upgrade, to remove the RHS sidebar on the "blog" page (like on individual posts/pages) and increase the main column width to about 800px, so images would show 800px wide? And would I be able to keep that width on individual posts too?

I am messing around with Duster on my test blog, if its any help you can see it here: http://kerryandluis.wordpress.com/

Thanks so much, in advance, I try not to ask stuff too often since I know youre all super busy, but it would be great to know if what I want is possible before purchasing the upgrade.

Note that you shouldn't change anything in the existing CSS of the theme - you just add whatever you want to change; see here for more:
http://csswiz.wordpress.com/2009/10/15/if-you-have-the-wp-com-css-upgrade/

@timethief Were you able to repeat the issue reported? I wasn't able to see it.