The Startup Disk utility is missing from Preference Panel.

I recently realized that I no longer have the Startup Disk preference pane in the Preferene Panel. I sometimes boot from other drives and now I'm forced to hold down the option key at restart or startup instead of being able to select the startup drive through the Startup Disk pane. If anybody can help shed some light on this issue, I thank you abundantly.

MacMini 1.66 GHz Intel Core Duo

2GB 667 MHz DDR2 SDRAM

Mac OS X 10.6.8