I'm guessing you have the same problem I am having.
Can you provide specs on the SCSI controller in the machine. Is it a RAID card? The chances are SME does not support your hardware.
have a look at my posts at
http://forums.contribs.org/index.php?topic=25735.0About halfway down there is a couple of links about making a boot disk that may help you.
It's a long winded process and quite nerveracking if, like me, you don't know much about linux. If you are going to do it, I would suggest trying it on SME v6 as this is what the instructions refer to. I've tried on SME 6.5 and things went a bit pearshaped as the disk doesn't work, but I am sure this was me guessing/filling in the gaps between v6 and 6.5.
Hope this helps