This is the result of the ifconfig, ifconfig eth0 and cat/proc/interrupts
:

svpg024:/home/simper # ifconfig
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:66 errors:0 dropped:0 overruns:0 frame:0
TX packets:66 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:4316 (4.2 Kb) TX bytes:4316 (4.2 Kb)

svpg024:/home/simper # ifconfig eth0
eth0 Link encap:Ethernet HWaddr 00:02:A5:F4:F4:9A
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
Base address:0x1400 Memory:fc404000-fc404038

svpg024:/home/simper # ifconfig eth0 192.168.11.24 up
SIOCSIFFLAGS: Dispositivo o risorsa occupata
SIOCSIFFLAGS: Dispositivo o risorsa occupata

svpg024:/home/simper # cat /proc/interrupts
CPU0
0: 86724 XT-PIC timer
1: 884 XT-PIC keyboard
2: 0 XT-PIC cascade
5: 1 XT-PIC ohci1394, usb-uhci
8: 4 XT-PIC rtc
10: 573 XT-PIC usb-uhci
12: 24463 XT-PIC PS/2 Mouse
14: 4206 XT-PIC ide0
15: 24455 XT-PIC ide1
NMI: 0
LOC: 0
ERR: 0
MIS: 0
svpg024:/home/simper #

Ah, finally: I can't turn pnp from Compaq bios...
Look like it's VERY hard for a standard machine to make linux work in a local network...
Hope I'm wrong
Simone