As an aside... When I was entering a quilt that I designed using standard blocks into an AQS show, I checked on the use of those blocks from EQ6. According to the EQ6 website:
http://www.appliquegraphics.com/Supp.../copyright.asp
EQ4, EQ5, EQ6 software
Blocks: Any blocks you design (without copying a design from existing copyrighted quilt blocks) are yours.
Blocks from the EQ Libraries are copyright free for the most part (because we either drew them or they've been in public domain since the turn of the century and no one can claim copyright to them) except for the blocks designed by Debbie Sichel and Rita Denenberg. Debbie and Rita's blocks are clearly marked by the Block Name. You do not need to mention that the pattern was made in EQ6, EQ5, or EQ4 (we love it if you do, of course).
Quilts: Any quilts you design (without copying an existing copyrighted quilt design) are yours.