I think you can use John the Ripper to do something similar. If you've never used it it's under /pentest/password/john-1.7.2/run. You can do something on the lines of
john -incremental=All --stdout > all.lst
That produces a list of all combinations of the 95 printable ASCII characters of lengths 1 to 8. You can replace "All" with say "Alpha" or "Digit" to get just alpha or numeric passwords. It's also worth having a look at the john.conf file, you can change the min and max length of the generated passwords.
To be honest though I think a password file like this would take forever to get through.
A list of all printable characters from Wikipedia (starting with a space)