sure is!
im going to assume that you'll use two list boxes (combo boxes are the same)
list1: contains the stores
list 2: contains the names of employees
on the table with employees, you should have a field that specifies which store that employee belongs to
go to the properties of the employee list box and under the data tab, click the ...
that brings you to the SQL builder where you can lay your list contents out - the trick is:
under the criteria part of store name type this:
Like [forms]![nameofyourform].[nameofthelistwithstores]
finally:
go to the events tab under the properties of the list with the stores, click the ... of the afterupdate event and use the code builder
(assuming list2 is what you named your list with the employee names)
enter this code:
me!list2.requery
that should do it - i hope i didnt confuse you
i'm just learning this stuff too (thanks to the help of many people from this forum)
what fuga said is really good too - you want to set up the relationships between the two tables so you can be able to do more with the database later