1) Are you trying to use vanitygen to solve this puzzle?  If so you are using the wrong tool - unless you plan to modify the code to make a program to work on this puzzle.

2) If you just want to install vanitygen for the heck of it and need information about vanitygen I suggest you ask in the vanitygen thread.  This thread is about the BTC puzzle transaction.

3) Maybe you meant LBC instead of vanitygen?  You can ask about LBC in the LBC thread - not here.