I after multiple failures with other boot disc images I've tried, I just broke down and bought this:

Dreamcast DC-IE Import Enabler
Amazon.com: SEGA Dreamcast DCIE Import Enabler: Video Games

Have any of you folks ever used this? It claims to work with VGA which is a must for me. I've owned a PAL copy of Headhunter for 3 years now and I've never been able to play the damn thing, so if $25 solves that issue I'll be more than happy.

Shiner