you can just insert image from the tinymce editor

kutis is correct. Just add an image through TinyMCE. Use a table in the TinyMCE editor if you have too. Else create columns through the theme.

Still I think it's possible to attach other blocks to a parent block. Just no one has created it and when I think about it, it's a lot a work...

yeah, there are no nesting of blocks within blocks in concrete5.. that simply creates too many permission and IO issues...

you could solve this problem by putting 3 blocks in one block area:
Content
Image
Content..


you could solve it by making a page type for the layout and making three separate block areas in the template file.. that would let you do stuff like put an image in the middle with page type defaults that only one permission level could edit, but still wrapping it in text blocks..

or, yes you could just place an inline image using tinyMCE(content block)

plenty of easy ways to meet your challenge, lets not over engineer anything. ;)

thanks for the responses guys, frz suggestion sounds close to what I need...