today in will tell u very smart tip to lock ur picture and personal data in my briefe case folder in windows xp.>>>>>here we go
Step 1: first make a new folder anywhere in windows. and copy ur data in it.
Step 2:now right click on ur briefcase and select properties. there is a option "read only" check it and click ok.
now try to open your briefcase... ohhhhhhhh u will see this messege...
Now if u want to view ur files simply uncheck read only option
Tip: after adding new files in briefcase you have to check read only option every time