The ThinkVantage CSS Password Manager can be used to fill in password for forms and applications. How do I set it to lock a particular folder in the drive?
Lenovo does not provide any software for folder encryption.
Windows includes a way to do this, it's called EFS: http://support.microsoft.com/kb/223316
You could also look at freeware programs like TrueCrypt: http://www.truecrypt.org/