Now if I only knew what an STK file was, and how to make one, I wouldn't now be living in terror that Sony won't get the Reader here in time and I'll have to buy this one for my wife instead...
Sounds like a removable battery? A useful feature for my wife. She's one of those people around whom batteries have shorter than expected lives for some not well understood reason.
I just call her "Battery Vampire". Less than six months and I've already had to replace both BT50's for her Motorola A1200... my single BT50 is still going strong in my A1200 after seven months.