Combo Box to look-up values from another form

[emerlita]

I have a form called InterconnectLIRs. This form has 2 combo boxes
called LIR & Interconnect
I have them unbound right now to store values from the another form
called InterconnectSTS. Where user define their LIRs(where it looks up
to another table). Also, define their interconnects.
1 Interconnect can have many LIRs.
What i want my conbo box to do is only display the data that was
selected from the other form called InterconnectSTS. I was able to do
the interconnect combo box BUT i'm having problem displaying the LIRs
related to that Interconnect.
Please help.