| Right click on the folder,properties for the folder you wish to keep others from having access to, then click on the advaced tab at bottom of properties ! A box will open wit some options the last one is to encrypt the file or folder. In Windows help it says this about encrypting a file or folder|
>>>>> Data encryption>You can think of encryption as locking something valuable into a strong box with a key. Sensitive data is encrypted by using a key algorithm, which renders it unreadable without the knowledge of the key. Data encryption keys are determined at connect time between a connection and the computer on the other end. The use of data encryption can be initiated by administrator <<<<<<<
You may also want to read up on compressed an or zipped files ,I believe with these you may also set a password to keep them zipped ! I have never had the need to l
"lock" a file or folder however I know the ability exsist to do so with one or both of these options !
Good Luck ,Nick