How to get into BIOS as supervisor on IBM ThinkPad T41?

Hi,

I want to re-install OS on a IBM ThinkPad T41.I can get into BIOS but I am unable to make any changes(want system to boot from CD).All I get is the Beep sound whenever I try making any changes on the options available. On the right it says "All items on this menu cannot be modified in user mode.If any items require changes,please consult your system supervisor"

Under the Security>Password menu I get the following Options:

Using Passphrase [Enter]
- Current Setting Enabled

Supervisor Password [Enabled]
Lock BIOS Settings [Enter]
-Current setting [Enabled]

Set Minimum Length [Enter]
-Current setting Disabled
Power-On Password [Disabled]
Hard Disk1 Password [Disabled]

But just like the other menu I am unable to make any changes.

I don't get any option to log in as the supervisor
Also I dont remember setting up any password for the supervisor. How can I log in as the supervisor and make changes ??

Thx in advance for your Help!