If your .cpt files are from Corel Paint 6, then two options:
No idea, what it is from. I think another family member "obtained" the software "somewhere" and I never really was particularly fond of it, or its proprietary format. $ file ~/Pictures/My\ Pictures/holidays/Grampians/F1000001.cpt /home/brian/Pictures/My Pictures/holidays/Grampians/F1000001.cpt: data
1. XnView has a Linux version and will read .cpt files:
Doesn't look hopeful :-( brian@andean:~/Desktop/XnView-1.70-x86-unknown-linux2.x-static-fc4$ ./bin/nview ~/Pictures/My\ Pictures/holidays/Grampians/F1000001.cpt ** NVIEW v4.51 Copyright 1991-2002 Pierre-E Gougelet (Sep 6 2005/15:28:19) ** Version for Linux x86 (X11) (All rights reserved) ** This is a freeware software Error --> Don't know how to read this picture
2. If that doesn't work, try Irfanview on Windows.
Ok, might have to do something like that eventually. Thanks for the suggestion. -- Brian May <brian@microcomaustralia.com.au>