I have not tried this, but I think the query parameters would go something like this:
If frmPopUp.ckPhone1 = vbchecked then fldPhone = "Nokia"
OR
If frmPopUp.ckPhone2 = vbchecked then fldPhone = "Motorola"
Etc.
As I said, I haven't tried it, but that should at least get you moving in the right direction. Hope it works!!
Tess