Maybe you'd like the Omni Slideshow widgets. There are 2 versions:
WWW Linkand
WWW LinkBoth have resizing options, 25%-50%-75%-100% I think, neither will enlarge.
Both run better when run with a right-click or a shortcut like any other .exe file, I think they get odd if you use the DesktopX Import/Widget function with them (If I remember correctly, they take over the DTX right-click menues if you "Import" them, and also you would not want to "Import" both of them at the same time). They are nice widgets though, just run them like any other program.
If you go go into the DTX widget Gallery and type "picture" into the search box in the upper right, I get 4 more picture frame/viewer objects, so you might try some searches like that using "picture", "frame", "viewer", "image", etc.
Also with the desktop builder did add a layer and the photo but when put on the desktop can not resize
After adding the layer, you can fix the the size of the object. The height and width can be assiged individually, in other words if you change the proportions of the image it will distort. In DTX builder mode: Right click on the object, click on "properties". "Properties" window pops up, click on "Summary" tab, click on "Image default" to the right of "Width" to set the width, and again for "Height". Click on either "OK" or "Apply".
Once you fix the size of the object, DTX will keep it that size even if you change the image to a different sized one. If you want it to stop resizing the image, go back into the summary as described above and click on the "Reset" button next to the width and height.