Cross Tab Sort and Exclusion

Question

I have a cross tab that maps closing dates over the prior 13 months and looks like this: 
                Total
        Total          3,004
     Sep-08     137
     Aug-08     220
     Jul-08     251
     Jun-08     201
     May-08     168
     Apr-08     263
     Mar-08     212
     Feb-08     163
     Jan-08     142
     Dec-07     100
     Nov-07     176
     Oct-07     149
     Sep-07     109
     Jan-00     713
I have mapped everything that is not within the prior 13 month range to Jan 1, 2000.  I have used record selection to grab records based on multiple criteria.  It looks at cases opened in the prior 13 months and cases closed in the prior 13 months.  This looks at opened and closed dates.  The 713 is just everything in the past 13 months that doesn't have a closed date.  When I don't map it to Jan-00 it displays a blank row.  I tried to do a specific order sort but when I ran my report today it did not include Sep-08, not that its difficult to add the month once a month, but is it possible to exclude Jan-00 when its printing the cross-tab and then sort the remaining ones in descending order [most recent month prior to oldest]?  I am new to Crystal Reports.  I thought it may be in the Formula as Group Sort Order and something like this
if {@Closed Month}= date(2000,01,01) then [not sure of what function to exclude] else {@Closed Month} crDescendingOrder
thank you all for the support so far

Answer 1

Try using group selection formula like
{@Closed Month}<>date(2000,01,01)
to exclude JAN data.
Regards,
Raghavendra