What is this partion & re-partitiong?

Hi there. I'm setting up a customer's 1600SC with RH EL 3.0 as preloaded from dell. It has 3-36GB hard drives, RAID 5.  I want to re-allocate space from root, /usr, and /var to /home for our custom application (there's plenty of space to go around).  Planning on using parted to resize the partitions (anyone ever do this?).

df -v shows:

Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/sda7              2063504    347164   1611520  18% /
/dev/sda3               194449     11061    173348   6% /boot
none                   1030776         0   1030776   0% /dev/shm
/dev/sda8              1035660     32904    950148   4% /tmp
/dev/sda5             10072456   2398904   7161884  26% /usr
/dev/sda6             10072456     98992   9461796   2% /var
/dev/sda2              2585332     32884   2421120   2% /home

fdisk -l shows:

Disk /dev/sda: 72.7 GB, 72729231360 bytes
255 heads, 63 sectors/track, 8842 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot    Start       End    Blocks   Id  System
/dev/sda1             1         5     40131   de  Dell Utility
/dev/sda2             6       332   2626627+  83  Linux
/dev/sda3   *       333       357    200812+  83  Linux
/dev/sda4           358      8842  68155762+   f  Win95 Ext'd (LBA)
/dev/sda5           358      1631  10233373+  83  Linux
/dev/sda6          1632      2905  10233373+  83  Linux
/dev/sda7          2906      3166   2096451   83  Linux
/dev/sda8          3167      3297   1052226   83  Linux
/dev/sda9          3298      3551   2040223+  82  Linux swap

What is the 68GB of Win95 Ext'd (LBA)?   I see from http://docs.us.dell.com/support/edocs/software/osrhel3/en/RHEL3en3.pdf that it is supposed to come with a 32MB utility partition, but I am assuming that is "Dell Utility".     If it wasn't so large, I'd say it was related to the RAID 5....

Any ideas would be appreciated..... 

Thanks,

Kevin

PS any ideas on getting rid of the KDC error when telnet'ing in would also be appreciated (I don't want/need kerberos running...)