OpenGL

Rounded Rect
"Start with something simpler, a circle (do you remember your trig?). Once you have that down move onto the rounded rectangle (basically just the four quadrants of a circle separated by rectangles with another rectangle in the middle)."
 * http://www.gamedev.net/community/forums/topic.asp?topic_id=363153
 * http://www.gamedev.net/community/forums/topic.asp?topic_id=471454
 * http://www.opengl.org/discussion_boards/ubbthreads.php?ubb=showflat&Number=92655&page=1
 * http://glbook.gamedev.net/moglgp/code.asp

NeHe

 * http://nehe.gamedev.net/data/lessons/lesson.asp?lesson=08
 * http://nehe.gamedev.net/data/lessons/lesson.asp?lesson=20

Glowing

 * http://www.allegro.cc/forums/thread/592220
 * http://www.gamedev.net/community/forums/topic.asp?topic_id=318280
 * http://www.gamasutra.com/view/feature/2107/realtime_glow.php
 * http://www.daionet.gr.jp/~masa/rthdribl/
 * http://www.humus.name/index.php?page=3D&ID=32