Desperate: How to get my OS on my CF card

Hi,
This must have been discussed before but still I can't figure out what's 
wrong.
My linux box has 1 ide (hda) and 2 sata disks (hdg and hde). I have a Lexar 
CF-card (sda). I downloaded mini-debian-0.08.0.tgz, cfdisked the CF-card with 
1 linux partition of 128 MB. I untarred the image onto the CF-card and 
installed grub. When I run grub, the CF-card=(hd3). When I use 'root (hd3,0) 
setup (hd3)' then the bootprocess of the openbrick hangs with the error 'GRUB 
hard disk error'. Using other 'root' settings, it hangs after the PCI 
listing.

Is there anyone who can help me solve this problem?
Thanks 

Mike