I know this threads getting old now, but I though I'd post this as a partial fix.
See video I made and stuck on Youtube.
If it wasn't for the slight echo it would be ideal, but I think it's going to be impossible to lose it.

eecon- So, what works in XP doesn't in Vista. After three days of incremental diagnostic installs, I'm really starting to think of downgrading to XP. Vista post-SP1 seems to be INCREDIBLY MORE FRAIL than pre-SP1, I've got a number of apps and drivers that can trash it (kill shutdowns and/or restart...