Question : Access 2008 forms: How to get user choice from combobox A to be used to filter choices in combobox B?

I'm  new to Access 2008.
Background:
I am trying to create a form where I have a combobox, say, Business_Unit, and and another combobox, say, Site.
I have succeeded in having Business_Unit combox be filled with values from an ODBC connected SQL Server database.

Problem:
I want to be able to:
1) have the user choose a particular choice from Business_Unit, and then
2) have that be somehow conveyed to the Site combobox so that
3)  it can filter the Site combobox choices it will show dynamically.

Answer : Access 2008 forms: How to get user choice from combobox A to be used to filter choices in combobox B?

read some of the links below, I have given one for 2010 and one for 2007.

Same kind of steps can be followed.

http://www.sharepointoverflow.com/questions/2485/guidance-on-renaming-the-multitude-of-databases-generated-by-sharepoint-2010

http://blogs.technet.com/b/seanearp/archive/2009/03/14/renaming-crazy-sharepoint-database-names.aspx