Thank's a lot guy's.
All post are really helpful.
I will install the new kernel from scratch again and use your tip's.
Really, make install(.sh) copies the image and map file to /boot, after it set new links to the old kernel files and set no new symlinks. It copies the image and map file to /boot and name it vmlinuz & System.map.
But it will not add new lilo.conf entries. I had to insert the option for the old kernel (files named *.old from install.sh) manually.
Anyway, I get a kernel panic.
All posts I read so far including my Panic message are related to filesystems which are not build-in the kernel or SCSI/RAID solutions. But I only use ext2 on my IDE HD. It's built-in definitely and I guess initrd is needlessly. But that's another issue and if I don't figure it out I will start a new Thread.