An excellent result for Palace with goals from Neil Danns and Calvin Andrew sealing the victory.
In-between Clint Hill put into his own net.
Both clubs are struggling financially so a lucrative 4th round draw would mean a lot. Hillsborough saw the home end completely empty as a way to cut costs and Palace could only muster 4 subs.
It's Palace though who will be hoping for a money spinning 4th round tie.
The draw is on Sunday afternoon.