Since this has been revived here's my advice.
Use a sentence as your password.
Some passwords can have spaces and some can't. If there is no limit to the number of characters either use something like:
This is a secure password.
or
Thisisasecurepassword.
Both are EXTREMELY secure passwords and would take YEARS to decrypt. Even better would be to put in a number when possible.
Anyway just my .02 worth.