Zu, isn't it better that an old thread about the very thing the person wanted to post about, was bought back up, rather than starting a new thread about the same thing?
agreed! and so i'm going to hijack this thread 
i have been frequently visiting this page and using stardock product for maybe a few years now, but never uploaded until yesterday.
as i got more into customizing given WB skins lately (for private purpose only, yesterday i wanted to create a new wallpaper. something not so claptrappy, more elegant that fits to my dark WB skin. i started witha dark grey background and added a brushed metal effect to have it not so sterile and some light for a little bit of the third dimension. then i got myself the shape of the landmass of the earth which should become the foreground element. again i added textures and effects and spend way to much time playing around with layer-fx, the colors and so on until i got it to a point where i was happy with the result:
-> http://a.yfrog.com/img690/8407/vintageearth2560x1600.jpg
probably not the most eyecatchiest wallpaper around, but i thought that it might be interessting to see how others like or dislike it, i created 3 other resolutions for 16:9, 5:4 and 4:3 ratios, packed them to a zip and uploaded this file to the wallpaper section. after the upload the file was already visible in my profile, but this morning i got 2 mails saying that the upload did not match the guidelines and has been rejected. one mail labeled "island dog" as name of the sender, the other one labeled "wincustomize support".
on one hand, i considered that this might have been a technical problem, so i link the picture that i used for the preview and the zip file with all 4 jpg files in the text above. i'm not a newbie in using forums and their functionalities and the non-automated email also indicates, that there is most likely not a technical problem, but if there is something wrong with the files or whatever, some advice would be welcome.
more likely seems that the image has been categorized as art thievery or something similar. to sum it up: i arranged every pixel of the picture. i created most textures myself, or used free textures. the only exception is the shape (and only the shape!) of the landmass of the planet earth. of course i didn't fly 200miles straight upwards and took some fotos myself, but i take every bet the rightsholder of the original source of that shape neither did. also before using this picture, i reduced it to this so i think that it is questionable if one can proof that the origin of the shape actually is a certain picture. for example i could have created the shape by using some random school atlas (like in old days with sandwich paper, hrhr) ... actually i do not care to admit that the origin is a certain, probably to some of the users known source, but the question is, if such a shape, clearly "stolen" from the earth can be claimed as intellectual property. however you name the force that is the actual creator of this shape, i guaratee it is not interessted in copyrights! probably more a GNU fan... at least i haven't heard of any artist who got hit by a lightning for potraying the wonders of nature in his work... anyway, i'm not familiar with copyright laws or where wincustomize draws the line for art thievery. and i'm neither expecting a mod taking time for a discussion about this topic, nor do i rage that the pic has not been published... posting just out of curiousity because the first time i uploaded something that actually got tested for copyright related stuff, it instandly failed^^. it never came to my mind, that this would be a problem. anyway i would be interessted in a more detailed explaination, maybe from someone more expirienced with this topic who actually took the time to read all of this text that got far longer than i expected when starting to write it 
cheers