R2 Software Disc 1:
http://download.microsoft.com/download/4/e/e/4ee6fe 6f-8042-4a02-ba41-08e0d39e9e5a/x11-03905.iso
R2 Software Disc 2:
http://download.microsoft.com/download/0/4/3/04359B D1-571C-4114-920A-B5A8952EE92B/srv03_r2_2075_usa_x8 6fre_adsr2.iso
Disc 1 contains the actual OS Windows Server 2003 with SP1 Trial Disc 2 contains the R2 software Trial