loads the old nic driver version

Hi, I downloaded the latest version driver of my network card, I compiled and installed with modprobe but when I restarted the PC, Debian loads the old version.

I tryed deleting the old e100.ko file from /lib/modules/2.6.18-custom/kernel/drivers/net so debian load the newone from /lib/modules/2.6.18-custom/kernel/drivers/net/e100 but id didn't work

This is the driver that gets loaded when the PC starts

PCI: Firmware left 0000:02:08.0 e100 interrupts enabled, disabling
e100: Intel(R) PRO/100 Network Driver, 3.5.10-k2-NAPI
e100: Copyright(c) 1999-2005 Intel Corporation
e100: eth0: e100_probe: addr 0xff9ff000, irq 185, MAC addr 00:03:47:C8:77:77
e100: eth0: e100_watchdog: link up, 100Mbps, full-duplex

if I remove that module with modprobe -r e100 and load the new module, it gets loaded (version 3.5.17) but the next time I turn on the PC, debian loads the old module again (version 3.5.10)

Any idea?

Thanks in advance