Thank you for the input, DavidW.
{{{{Quicken doesn't like specified dates of 29th/30th/31st for regular routine monthly functions, because it causes a wobbly in February. Do you have a recent backup from before you changed the date that you could roll forward from, leaving the date as it was, or is that not practical?}}}}
I've always used the last day of the month (instead of the one supplied by Quicken) and it has never seemed to produce a "wobbly" in February. I've used the program for about 8 years.
{{{{I think that if to try to un-reconcile the Jan transactions for 2008 year end purposes, Quicken will permanently disable the reconciliation facilty on that account, so beware!}}}}
At this point I have completed reconciliations only through November, 2008. Haven't clicked the "Finished" button yet because I'm out of balance, due to the January transactions posted on the bank's statement.
Whew, this is a tough one!

Quicken: Either love it or hate it. Sometimes both.
I'm considering rolling 2008 over into 2009. I've always preferred keeping separate files for individual years, but this may be the only solution. I need to look up how to do that.
Meantime, I'll wait to see if any additional gems of wisdom pop up here.
(P.S. Sorry about the sloppy manual quoting of DavidW's statements. I wasn't about to retype this a third time. Don't get upset with me, beeceebee ,-- I'll get back to it. I have a Quicken-fried brain at the moment.)