Hai, I have gone through Linux Kernel Module Programming Guide.I tried to run the simple module hello.c.when I compiled I got teh error message /usr/include/linux/modversions.h#error Modules should never use kernel headers system heads(this is the message from the that header file) I am using Red Hat Linux-7.1 and the kernel version is 2.4.2-2. What went wrong?Thank u in advance for spending time for me Kannan Ram _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp - Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ IRC Channel: irc.openprojects.net / #kernelnewbies Web Page: http://www.kernelnewbies.org/