[WriteLog] Need to change all times in log

[Kt3y at aol.com]

Due to a setup error, my computer clock was off
one hour from GMT in a recent contest. Is it 
possible to change the times of all qsos in 
an existing log.? That is, if a qso was logged
at 2230, it should be 2330. I believe the
capability to adjust the whole log 
exists in NA or CT. Is it possible with Writelog?
Many thanks in advance.
73 Phil KT3Y