I Want to Lock Windows C:\Program Files Folder.Please Anyone Help me.I Want to do Without Software. Have Any Tricks? Please Post Here As Soon As Possible.

In what way do you want to lock it? The easy way would be to use a limited user account (not an admin account), which stops people from writing to both of these (among other) locations.

I would not advice 'locking' up the C/Program folder (assuming C is your System Disk) as also the Windows folder using any sw. Above^ suggested solution should be considered, imo.

http://www.newsoftwares.net/folderlock/