Populate a combo box based on selection in another combo box (Access 2010)

[Butterfly807]

Hello! I'm have quite a difficult time getting a form in Access 2010 to perform the way I would like it to. I have multiple tables that I've created, and a query that contains the data from the various tables. I then ran the form wizard to select the data from the query that I wanted to populate in my form and I've added 2 combo boxes.

What I want to do:
1. I want users to be able to select a category in combo box #1 (example: "Bag")
2. I want users to be able to select a detail in combo box #2 based on the category they selected in combo box #1 (example: Combo box #1, "bag" would populate the following selections for combo box #2: "sandwich" and "tool")
3. I want users to then receive a list of suppliers that provide the product they have selected, either "Bag: Sandwich" or "Bag: Tool"

I have combo box #1 populating a list of categories already. However, I am not able to get combo box #2 to provide choices based on the selection chosen for combo box #1. Any help would be greatly appreciated. Preferably, a step-by-step instruction of what I need to do to make these work properly.

Thank you.

[Butterfly807]

Ok, I'm so excited because I figured out how to get combo box#2 to provide a list of selections based on what was chosen in combo box #1. Now, I have the issue that my subform is not populating based on the selections made in those combo boxes. How do I get the subform to populate the list of suppliers based on selecting "bag" in combo box #1 and "tool" in combo box #2 (for example)?