Thanks to everyone for their help on this all worked as advertised.
I thought I'd do a recap in case someone else is looking for the same info.
My internal disk had 2 partitions. Partition 1 was where Tiger was installed and partition 2 is where Leopard was installed. I removed partition 1 assuming I could use Disk Utility and easily extend partition to use the free space - this does not work.
Following the advice in received in this forum, I downloaded SuperDuper and installed it. I used a external USB drive formatted it Mac OS Extended. I did a SuperDuper Backup-All of my internal drive. When that completed I rebooted from the external drive "clone". The OS loaded exactly the same as the internal drive. I then launched Disk Utility and re-partitioned the internal drive as 1 partition using the full capacity of the disk fomatted Mac Os Extended. While still running from the clone, I then lauched SuperDuper and did a Backup-All again. This time from the clone to the newly partitioned interanal drive. When it completed, I restarted and booted from the internal drive. Very cool, it was as if I hadn't done any of this except I now have the full capcity of th drive.
Thanks again to all for your help.