Resizing a partition?

[Scott R. Ehrlich]

I am running an out-of-box installation of 64-bit RHEL5 on a PE2950.

The OS is on two mirrored disks.   The home directories are on the 
remaining four.   No space remains for additional partitions.

Is there any way, through Dell utils or the OS itself, to resize the home 
partition to allow for the creation of one more, or am I stuck with what I 
have now or rebuild from the ground up?

Thanks much.

Scott