I used a USB stick method. In order to do this, it is first necessary to change the boot order in BIOS:
0. Plug in USB stick
1. F2 to get in BIOS
2. I left the "Booting order" settings in tact (HD first), but changed (after plugging in the
bootable USB stick) the Hard drives booting scheme so that my USB stick comes first
Now the BIOS is ready to boot the USB disk with Debian Squeeze on it.

Instead of just the ordinary netinst image, I placed the entire first squeeze CD on the usb stick using the information in: http://www.debian.org/releases/squeeze/i386/ch04s03.html.en
In short:
0. With gparted (for example) rewrote the partition table of my USB disk so that /dev/sd?1 is
about 700 MB big. [Note: ? is whichever letter your system assigns to the USB stick]