The red lights are the pages for the book, and can be found in either Commonlands or Antonica.
I didn't have much luck in Antonica, so all but one were in CL. Disclaimer of these could be random so my locations may mean nothing. Here's my /locs from the Everfrost server:
229.76, -15.42, 574.39 (near Crater Pond in Ant)
-183.08, -46.57, -400.23 (near the spires in CL)
149.67, -42.90, -513.96 (near the spires in CL)
313.22, -47.85, -758.76 (SW of DLW zone in CL)
524.41, -47.42, -751.92 (between Nek griffon tower and DLW in CL)
653.45, -45.07,-453.57 (by Pride Lake in CL)
749.50, -60.73, -3.58 (west of druid ring in CL)
447.85, -54.31, 502.48 (Forgotten Valley in CL)
-673.42, -47.89, 478.64 (around the orc captains/generals in CL)
-944.25, -48.04, 585.98 (around the Bloodskull warriors in CL)
-1277.95, -69.72, 420.97 (SW of Turmoil Cemetery in CL)
-1096.38, -40.45, 306.28 (SW of Freeport, on the spider mound, in CL)
edit: Regarding the puzzle pieces, it's mostly solved over on the
official forums!
Edited, Feb 10th 2010 8:45am by Cyliena