Hi - I'm trying to get wireless running on CentOS 4.7 on a dual core laptop (latitude-e4500) for an employee. I'm having trouble with building dkms-ndiswraper-1.54-1.el4.rf - enclosed are the errors messages. The kernel was rebuilt to disable CONFIG_4KSTACKS. The errors prior to rebuilding the kernel are identical to the errors after rebuilding the kernel and rebooting - minus the error regarding the CONFIG_4KSTACKS. Basically I just typed make in the directory. I'm using dkms this time - I've never used it before. I'm under the impression that all I had to do was type 'make' in the directory in the ndiswrapper directory. Any help would be greatly appreciated! -- Agile make -C /home/praveen/rpmbuild/BUILD/kernel-2.6.9/linux-2.6.9 M=/usr/src/ndiswra pper-1.54-1.el4.rf make[1]: Entering directory `/home/praveen/rpmbuild/BUILD/kernel-2.6.9/linux-2.6 .9' MKEXPORT /usr/src/ndiswrapper-1.54-1.el4.rf/crt_exports.h CC [M] /usr/src/ndiswrapper-1.54-1.el4.rf/crt.o In file included from /usr/src/ndiswrapper-1.54-1.el4.rf/crt.c:16: /usr/src/ndiswrapper-1.54-1.el4.rf/ntoskernel.h:289:1: warning: "for_each_possib le_cpu" redefined In file included from include/linux/sched.h:15, from include/linux/module.h:10, from /usr/src/ndiswrapper-1.54-1.el4.rf/ntoskernel.h:22, from /usr/src/ndiswrapper-1.54-1.el4.rf/crt.c:16: include/linux/cpumask.h:374:1: warning: this is the location of the previous def inition In file included from /usr/src/ndiswrapper-1.54-1.el4.rf/crt.c:16: /usr/src/ndiswrapper-1.54-1.el4.rf/ntoskernel.h:649: error: field `lock' has inc omplete type /usr/src/ndiswrapper-1.54-1.el4.rf/ntoskernel.h: In function `raise_irql': /usr/src/ndiswrapper-1.54-1.el4.rf/ntoskernel.h:686: warning: implicit declarati on of function `mutex_lock' /usr/src/ndiswrapper-1.54-1.el4.rf/ntoskernel.h: In function `lower_irql': /usr/src/ndiswrapper-1.54-1.el4.rf/ntoskernel.h:708: warning: implicit declaration of function `mutex_unlock'make[2]: *** [/usr/src/ndiswrapper-1.54-1.el4.rf/crt.o] Error 1 make[1]: *** [_module_/usr/src/ndiswrapper-1.54-1.el4.rf] Error 2 make[1]: Leaving directory `/home/praveen/rpmbuild/BUILD/kernel-2.6.9/linux-2.6.9' make: *** [modules] Error 2 -- "We are drowning in information and starving for knowledge." -- Rutherford D. Roger