Hi 1. Why u afraid to reboot ya laptop? You shoud leave old kernel *always* if somthing goes wrong u can always boot in old configuration, at the moment I got 3-4 diff kernels on my system. 2. if u try install 3Com 3c589 is supported in kernel, u can install it like a module, (my one 2.4.12-ac5) but is in all 2.4.x 3. If u want install from source it bit tricky it took me some time and I got absed some of my friends ;) basicly they want kill me :P what u have to do, apt-get install pcmcia-source then go to /usr/src over there u shoud have pcmcia-cs-somthing.deb install it dpkg -i pcmcia-cs-somthing.deb after this u shud get a pcmcia-cs.tar.gz file under same directory /usr/src decompres tar -vxzf pcmcia-cs.tar.gz it will create direcory modules with subdirecoty pcmcia-cs go in to. cd /usr/src/modules/pcmcia-cs/ then ./debian/rules binary this will create a deb file under modules just then install it dpkg -i pcmcia-cs-somthing.deb and thats all :P and 4. good luck :)
siaraX