The "offical" linux team at Dell is at [http://linux.dell.com/] and they have some interesting material on running Debian on Dell. Read this for more info - [http://linux.dell.com/distributions.shtml#debian]

If you need some instructions on how to build your own kernel for your Dell here is a great site for that - [http://wiki.osuosl.org/display/LNX/Debian+on+Dell+Servers]

If you need help with your Dell raid controllers check this out - [http://linux.dell.com/raid.shtml#aacraid-debian]