Creating a crosstab that displays empty rows and columns

Hi,

I am very new at crystal reports.

I have created a crosstab in crystal reports. I am trying to report on the severity of incidents occuring for each building between a certain time period.

I have used the section expert to set the date range (from the incident table).
I also use the section expert to say if the building name is xxx then only show the data for that building.

 The cross tab SHOULD show the data as follows:


BUILDING xxx
                     jan06   feb06   mar06   apr06   may06
Insignificant       1         3         1          3           5
Low                  4         3         1          2           4
Moderate          5         1         1          1           3
High                 1         1         1          0           2
Extreme            0         0         0          0          0

but instead shows:
                     jan06   feb06   mar06   apr06   may06
Insignificant       1         3         1          3           5
Low                  4         3         1          2           4
Moderate          5         1         1          1           3
High                 1         1         1          0           2

ie it excludes the "extreme" row.
I am using 3 tables for this cross tab - tblIncidents, tblRatings, tblBuildings.
the tables are linked as follows:

tblIncidents.buildingref -> tblBuildings.buildingID
tblIncidents.ratingref -> tblRatings.RatingID

And i am using the following fields:

tblIncidents.ReportedbyDateTime
tblBuildings.BuildingName
tblRating.RatingName


Is there a way to make the table show a row (in this case "Extreme") even if the row is empty?

And if there were no incidents for a single month, is there a way to display that month with a column of zeros?

and finally, once this has been done, how can i create a chart that graphs the zero rows/columns?


Thanks in advance and please let me know if you need any more information.

Thanks

Midnite..