Encryption of data and disks ..

Hello I have installed suse 9.2 and I want to protect my data. I want when the computer boots, It don't ask to enter any password.. But if anyone tryied to read the data that is in htdocs It should ask. Only the user wwwrun can read it without any problem. Is it possible. I don't want none to fool around with my apache server. If someone triesto take out the disk and tryies to mount it on another computer he can't. Is there any way that I can do it. Or placing a hardkey on the LPT Port. Thanks any idea would be apreciated.