Ash, thank you for responding. I won't find out until tomorrow but I think it's because the wireless card was going bad. The wireless card is toast now...its almost as if while it was "going" bad, it was causing the "bad_pool_header" code 19. Now that it's completely toast, it's allowing me to boot up again. I knew it was directly related to the wireless card but wasn't sure why.

I'll find out for sure once I get a new card tomorrow. Thank you.