Combo Box Help!!!

I am a total VB rookie. i am going to ask a question that has probably been asked 20 times but oh well here it goes.
i am trying to use a combo box, when they select what they want out of the combo box, all i want is the return value.
based on what they pick i want a number i can look at and make a decision with. kinda like the msgbox returns a value for a yes
or a no. first of all is this possible or am i barking up the wrong tree? (if so what is a better way to do this???)
Thanks!!!!!

Do a search, I just answered a question like this a couple of days ago.

Thanks Menmoch!!
i eventually figured it out.
it went something like this.

Dim Rubber_choice
If Combo2.Text = "EPDM Rubber" Then
Rubber_choice = MsgBox("User Choose EDPM", 1, "Is This Correct?")
End If

If Combo2.Text = "EPDM Rubber" Then
Combo1.Visible = True
Else: Combo1.Visible = False
End If

If Combo2.Text = "EPDM Rubber" Then
txtbox1.Visible = True
Else: txtbox1.Visible = False
End If

i never did find a "number" but in using the text i was able to do what
i wanted to do!
This may or may not help rookies such as myself...........