storm ~ # rpm -ql kmod-forcedeth
/lib/modules/2.6.18-128.1.1.el5.028stab062.3
/lib/modules/2.6.18-128.1.1.el5.028stab062.3/extra
/lib/modules/2.6.18-128.1.1.el5.028stab062.3/extra/forcedeth
/lib/modules/2.6.18-128.1.1.el5.028stab062.3/extra/forcedeth/forcedeth.ko

storm ~ # cat /etc/depmod.d/forcedeth.conf
override forcedeth * weak-updates/forcedeth

storm ~ # modprobe -r forcedeth; service network restart
Shutting down interface venet0:  Shutting down interface venet0: 
                                                           [  OK  ]
Shutting down loopback interface:                          [  OK  ]
Disabling IPv4 packet forwarding:  net.ipv4.ip_forward = 0
                                                           [  OK  ]
Bringing up loopback interface:                            [  OK  ]
Bringing up interface eth0:                                [  OK  ]
Bringing up interface venet0:  Bringing up interface venet0: 
Configuring interface venet0: 
net.ipv4.conf.venet0.send_redirects = 0
                                                           [  OK  ]

#last dmesg:
ACPI: PCI interrupt for device 0000:00:0a.0 disabled
forcedeth.c: Reverse Engineered nForce ethernet driver. Version 0.62-Driver Package V1.25.
PCI: Enabling device 0000:00:0a.0 (0000 -> 0003)
ACPI: PCI Interrupt 0000:00:0a.0[A] -> Link [LMAC] -> GSI 10 (level, low) -> IRQ 10
PCI: Setting latency timer of device 0000:00:0a.0 to 64
forcedeth: using HIGHDMA
eth0: forcedeth.c: subsystem: 01043:82b3 bound to 0000:00:0a.0
ADDRCONF(NETDEV_UP): eth0: link is not ready
eth0: link up.
ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
eth0: no IPv6 routers present

storm ~ # cat /etc/modprobe.conf
alias eth0 forcedeth
options forcedeth optimization_mode=1