Deauthorizing PCs
I have 5 PCs authorized but only access to one(the other 4 are dead) and it's Win Vista so no longer supported and I can no longer log into iTunes store to deauthorize the other 4. Is there anyway to deauthorize ALL 5 PCs so I can have access to my library etc. on a current PC? I've spent the last 2 hours trying to get iTunes to play well with the old Vista PC to no avail.