[WriteLog] Field Day Scoring

[Cantrell, Jack (Jack)** CTR **]

I am using version 10.40.  How do I configure Writelog so that it does not score other "D" class stations?  I have set my class parameter to "1D" and also "D" and yet I get points for other "D" stations.
 
Alternatively, how do I make the "X" mark next to the sequence number so that the QSO is not counted?  I can bring up the sequence number edit window, but my keyboard has no effect.  This is a year-old IBM thinkpad with 750M RAM running Windows 2000 at 900 mhz.
 
Or should I simply delete/not save QSOs with other "D" class stations?
 
Here is the rule from the ARRL web site:
 
4.6. (Class D) Home stations: Stations operating from permanent or licensed station locations using commercial power. Class D stations may only count contacts made with Class A, B, C, E and F Field Day stations. 
 
Thanks,
 
Jack