To use the ne drivers, change in the directory /lib/modules/2.4.21-24108-default/kernel/drivers/net/e100 or e1000 and move the module e.100/0_asl.o in the directory /lib/modules/2.4.21-24108-default/kernel/drivers/net. Then edit the file /etc/modules.conf and change the modul for your cards. In that directory you also find the currently loaded modules. bagira
and what is "NAPI"?, i've googled but only found the word, nothing describing what it does.
i've also found something interesting in a PDF, one that says that the new driver changed a lot of thing that where previously done by hardware to the SW "because processors and IO are fast enough"(they think that 3GHz CPU grow from trees for free...), one of those is TCP checksum(that 8255x series can offload). I'd rather leave everything that can be offloaded offloaded, it provides much better performance.