I see you edited the fstab was the line for /dev/sda2 not there already and come to think of it no icon on the KDE desktop too before you edited the fstab and re-started KDE?
That is correct. Here is contents of the original /etc/fstab:
proc /proc proc defaults 0 0
pts /dev/pts devpts mode=0622 0 0
/dev/fd0 /mnt/auto/floppy auto user,noauto,exec,umask=000 0 0
/dev/cdrom /mnt/auto/cdrom auto user,noauto,exec,ro 0 0
/dev/cdrom1 /mnt/auto/cdrom1 auto users,noauto,exec,ro 0 0
# Added by KNOPPIX
noauto,users,exec 0 0
The fstab file only contained lines for my floppy drive and my two CD drives, but nothing for my hard drive. Neither was there an automatic icon on the KDE desktop for my hard drive until after I created the /mnt/tmp file, modified the fstab file as follows, and restarted KDE.
proc /proc proc defaults 0 0
pts /dev/pts devpts mode=0622 0 0
/dev/fd0 /mnt/auto/floppy auto user,noauto,exec,umask=000 0 0
/dev/cdrom /mnt/auto/cdrom auto user,noauto,exec,ro 0 0
/dev/cdrom1 /mnt/auto/cdrom1 auto users,noauto,exec,ro 0 0
/dev/sda2 /mnt/tmp auto user,auto,exec,rw 0 0
# Added by KNOPPIX
noauto,users,exec 0 0
Unfortunately the /mnt/tmp file would disappear on reboot as mentioned before.

There should be a /mnt/sda2 already there so if you used this for the mount point when you save your config it should be recognized on re-boot.
I tried changing the mount point to "/mnt/sda2" but received an error message when I tried to mount it telling me it didn't exist. I changed it to "/mnt/auto/sda2" but when I clicked on the icon, my hard drive mounted along with the following "information" message:
mount: /dev/sda2 already mounted or /mnt/auto/sda2 busy

mount: according to mtab, /dev/sda2 is already mounted on /mnt/auto/sda2
But at least I could access the contents and read and write to the hard drive.

I was able to get rid of the "information" message by changing the mount point to "/mnt/auto/sda1", but when I moved my cursor over the list of files on the hard drive, Konqueror crashed. The KDE Crash Handler screen appeared and said that Konqueror had "crashed and caused the signal 11 (SIGSEGV)."

I changed the mount point back to "/mnt/auto/sda2". Thanks for that suggestion. Do you know what I should do to get rid of the "information" message that pops up when I mount my hard drive or how to correct my screen size problem?