If you want to contact the band theres a few ways to approach it. The easiest would definitely be joining the messageboards at www.billytalent.com
and then once you sign up you can send private messages to any of the band members. They will most likely reply, they will read it at least. To tell if they read it you can attach a "read receipt" that will let you know if they at least read it. The guys from Billy Talent are all nice guys so I'm sure you'll get a response, once you sign up you can pm these usershttp://ubb.atlanti...&sb=&o=&fpart=&vc=
thats the link to pm Ian D'sa, the guitarist with the cool hairhttp://ubb.atlanti...2&what=showmembers
thats the link to pm Ben Kowalewicz, the singerhttp://ubb.atlanti...2&what=showmembers
thats the link to pm Jon Gallant, the bassisthttp://ubb.atlanti...2&what=showmembers
thats the link to pm Aaron Solowoniuk, the drummer
They're all nice guys and I've met them all, I'm sure they'd be willing to help you out.
They're all home for a while now and aren't playing a show until December 31st, in Halifax. After that they don't have any shows scheduled. They will be writing their second album and stuff.
If you want to try a more professional approach you can go through Atlantic Recordshttp://www.atlanticrecords.com/
Or you could go to the show in Halifax and wait outside after the show til 2AM to meet them. They might be a little drunk then so I dunno what you're luck will be with getting good answers.