|Do you own this laptop?|
Did you buy it new?
The reason I asked the above questions is that it appears somebody (possibly you) has set a BIOS password on the machine. Without the password, it's not possible to enter the BIOS. If you can't access the BIOS, you can"t change the boot order (HDD first, CD second, etc.). The boot order needs to be set to CD first, in order to boot from a bootable CD/DVD.
I've never known the Windows installation process to request access to the BIOS. At what point in the process are you asked for this? If the installation process has actually begun, the boot order must already be set to CD first, otherwise, the Windows CD wouldn't boot, at all. If you are asked for this password prior to the CD booting, chances are the boot order isn't set correctly.
If you're lucky, you may be able to find a list of default BIOS passwords on the internet. I've never used these default passwords, so I can't make any claims as to their usefulness. I have read somewhere that a default password for Phoenix BIOS's is "phoenix" (without the quotations, and case-sensitive). Try both upper and lower case.
Older desktop computers can have their BIOS reset (by default no password is present) by removing the CMOS battery from the motherboard. This may be possible on some (but not many) laptops. If you open up the case, look for what looks something like a watch battery. If you find one, remove it for 30 seconds or more, before replacing it. Again, this may not work for your machine.
If the boot order is, in fact, set to boot from CD/DVD first (which suggests the Windows installation program needs access for some other, unknown reason), you could try tracking down a copy of Hiren's Boot CD. This is a bootable CD that contains a number of repair/diagnostic programs, including BIOS utilities.
Unfortunately, without knowing the point at which you're asked for the password, I'm only able to throw out ideas that you might try. I can't give specific help. I can only hope that something I've told you will help.
Please let us know if you found someone's advice to be helpful.