Howto create a custom-kernel Debian ISO?

[Pontus Edvardsson <pontus.edvardsson@bredband.net>]

Hi,
I've been spending the last two days struggling with installing Debian on a 
Dell PowerEdge 4400 server. The problem is that the raid card (Perc 3/Di) 
does need to be enabled in the kernel to be detected correctly. I have 
compiled a kernel that detects it, but now I'm confused about how to get 
Debian installed, using this custom kernel...

One way as I figure, would be to create a bootable ISO of the Debian cd and 
include my kernel. The question is, how would I go about that? Should I use 
mkisofs? If so how do I get the ISO correct?

Thanks for your help!

Pontus