The 2 files are created from a directory listing of all the sites in the system, soi they will automatiicaly be sorted, in exactly the same order, however, new sites will be placed within that order. So the files could look like this:
newsite1:

PHI_R10K_2 
PHI_TDAP_3 
de0040Newark 
de0042Wilmington 
de0053Christana 
de0053Christiana 
de0101Odessa 
de0102Clayton 
de0103Dover 
de0180Claymont 
de0184Wooddale 
de0187Woodcreek 
de0205ChestnutKnoll 
de0267Chapman 
de0314Glasgow 
de0348Millside 
de0371SouthDover
[download]

newsite2:

PHI_R10K_2 
PHI_TDAP_3 
de0040Newark 
de0042Wilmington
de0045Concord # <======= new site 
de0053Christana 
de0053Christiana 
de0101Odessa 
de0102Clayton 
de0103Dover 
de0180Claymont 
de0184Wooddale 
de0187Woodcreek 
de0205ChestnutKnoll 
de0267Chapman 
de0314Glasgow 
de0348Millside 
de0371SouthDover
[download]

at which point i would want de0045concord returned.
I hope this helps.
Thanks again


Dipul