What do you have in the registry under
Code:
HKEY_LOCAL_MACHINE\SOFTWARE\HTC\Manila\Home
?
All of the quicklinks are defined there going from 0-8 if using 9. 0 is the top left one if I remember correctly. You need to have the 0-8 even if they don't actually point to a program in order to be able to add anything to them (at least I think...
).