Looking for hardware based HD encryption

Hi.

Im looking for a hardware HD encryption device.
I need one that asks for password before the OS boots and encrypts/decrypts bit-by-bit as the OS accesses the drive.

I want to encrypt the HD with a password that only i will know.
I dont want a USB key or anything like that.
I want strong enough protection to prevent against professional data recovery labs.
Must be completey hardware based.

The absolute most important thing is the prevention of anyone to access my data. Data loss is not realy important. Put simply i would rather loose the data then to risk anyone reading it.

The only hardware based encryption i have seen requires USB keys which is no use to me since there is the possibility someone could steal the key and access my data

Does anyone know where to buy one of these?

Try

http://www.ce-infosys.com.sg

Compusec, I use it on around 15 laptops. Drives are totaly encyripted. It installs a boot loader but we have had no problems with it and win xp.

Can use windows hibernate feature ok.

Pre boot login username / password.

You can have a master reset password if you do not know user/password

nick