2) Specify the disproved ideas of YEC
3) What specific scientific discoveries by Creationists do you contest?
I don't pay much attention to Dave, so someone else will have to field #1.
As for #2, a "young earth."
And as for #3, I can't contest any "scientific discoveries by Creationists" because I'm not aware that there are any. Perhaps you could help out by naming a few.