Various images inside a post

Ok, let me be very clear from the start – I’m not looking for an basic image gallery solution. I did not found any solution from the WP-plugins.net, so my hope lies in here. 🙂

I want to spread my custom made backgrounds for monitors. One background and it’s resolution versions would be inside one “post”. I planned a way that listing would be in a category 5 thumbnails horizontally (can I run a loop for 5 times and then restart until there is no more posts?).

Title name
Thumbnail of the background
<– more –>

Now viewing size 800×600 pixels
<img src=”800×600.jpg”>

Choose different size
800×600
1024×768
1152×864
1600×1200

The image should be showing inside the post, in the layout. And when I click some other versions the same.