Display Null Values - Please Help

Hello Everyone,
I have scoured through a million messages (ok...thats a bit
exaggerated) but I just cannot figure out how to display null values in
a query. I have tried Nz, IIF, Count(*) but it just does not work. I
hope someone can help me with this. Here are the details:

Table: Group
Fields: Group Name, Group ID

Table: Region
Fields Region Name, Region ID

Table: CIM Customer Table
Fields: Group Name, Region Name, Sales Presentation, Status

Objective: Get a count for each Group (3 groups in total) and each
Region (3 Regions each for each group) where Status <> 'Deployed' and
Sales Presentation = 'Complete'

I get the count, but it does not include those regions/groups where the
field is null. I like it to display a zero for nulls. Here is the SQL
that I am currently using:

SELECT [cim customer table].Group, [cim customer table].Region,
Count(*) AS SALES
FROM [cim customer table]
WHERE ((([cim customer table].[Sales Presentation])='Completed') AND
(([cim customer table].Status)<>'Deployed'))
GROUP BY [cim customer table].Group, [cim customer table].Region;

I tried using the group and region tables as against the group and
region fields in the customer table but it wouldn't work.

Pleae Help

Thanks

.