ok first off fstab should look more like this. Remember to change ext3 to whatever file system you used for the boot partition. I'm assuming that sda2 is a /boot partition.


/dev/sda2 /boot ext3 noatime 1 2
/dev/sda3 none swap sw 0 0
/dev/sda4 / reiserfs defaults 0 0
proc /proc proc defaults 0 0
sysfs /sys sysfs defaults 0 0
devpts /dev/pts devpts gid=5,mode=620 0 0
tmpfs /dev/shm tmpfs defaults 0 0


Next lilo.conf should look a little more like this

lba32
boot = /dev/sda
prompt
timeout = 100
change-rules
vga = 0x317
image = /boot/vmlinuz
label = BT4
root = /dev/sda4
initrd = /boot/splash.initrd
append = quiet
read-only
other = /dev/sda1
label = Win7
table = /dev/sda

Chroot in and change that stuff and then run lilo -v again.