pgp-gd and netpbm (pamdice)

Hello *, I like to upload new topographical maps into my System and split it into smaller parts. Curently I am using exec() to do the Job, but like to use php native tools to do the Job. Also I need better naming schemes as netpbm (pamdice) do. Exactly I will like to give a horizontal vertical start number to get images like 00004_00008.jpg 00004_00009.jpg 00004_00010.jpg 00004_00011.jpg 00005_00008.jpg 00005_00009.jpg 00005_00010.jpg 00005_00011.jpg 00006_00008.jpg 00006_00009.jpg 00006_00010.jpg 00006_00011.jpg 00007_00008.jpg 00007_00009.jpg 00007_00010.jpg 00007_00011.jpg ^^^^^ ^^^^^ / \ horizontalline vertical image How can I do this ? Thanks and Greetings Michelle -- Linux-User #280138 with the Linux Counter, http://counter.li.org/ Michelle Konzack Apt. 917 ICQ #328449886 50, rue de Soultz MSM LinuxMichi 0033/3/88452356 67100 Strasbourg/France IRC #Debian (irc.icq.com)