Hi, i´ve made a little hacking in the random picture block, seeing the tip of CarpetBagger, i have included the option of display one picture a day.
The download is <!-- BBCode Start --><A HREF="http://www.winponta.com.br/download/postnuke/gallery_random_block_V_0_42.zip" TARGET="_blank">here</A><!-- BBCode End -->, I hope this get into the block development