You saw how I got the results. I typed in the lines with the question marks
(including the question marks) and when I pressed Enter, the following line
was the result.

For what you're trying to do, you may want to concatenate instead of using
the Logical And. To do this, try replacing the word And with the & sign.
This is actually a string function, but I believe it will do what you're
after.

Select Case frmSearch & frmOptions
   Case "11"
       DoCmd.OpenReport "newcorec", acViewPreview, , "coid=" & Me.txtCoCOID
   Case "12"
       DoCmd.OpenReport "companyrecord", acNormal, , "coid=" & Me.txtCoCOID
   Case "13"
       DoCmd.OpenForm "companymain", acNormal, , "coid=" & Me.txtCoCOID
End Select

I spoke too soon!!  It does work!!  I forgot to change the frmSearch
and frmOptions to frmSearch & frmOptions.  After I changed ALL the ands
to &...it works like a charm!!  Thank you, Wayne for the help!!

Your old statement works correctly for the first 2 cases by accident but
logically.  Wayne actually answered this in his explanation of the "bit-wise
And".

I am sure your logic was:

Case 1:  If frmSearch = 1 and frmOptions = 1, open "newcorec"
Case 2:  If frmSearch = 1 and frmOptions = 2, open "companyrecord"
Case 3:  If frmSerach = 1 and frmOptions = 3, open "companymain"

(don't know what you wanted to do if frmSearch <> 1)

However, this is not how the case statement works.  Remember that I wrote
that Select Case doesn't work with 2 "index" variables.  It can only accept
1 "index" variable and therefore VBA interprets the single  "index" variable
to be (frmSearch And frmOptions), i.e. the result of the bit-wise And
operation as the "index" variable for Select case.

Note also that (according to your code of the cases inside the Select Case):

Case A: (1 And 1) gives 1 in bit-wise And calculation.
Case B: (1 And 2) gives 0 in bit-wise And calculation.
Case C: (1 And 3) gives 1 in bit-wise And calculation.

Thus:

* If you have Case 1 above, i.e. (frmSearch And frmOptions) evaluated to 1 ,
the code will execute Case A which happens to be what you wanted.

* If you have Case 2 above, i.e. (frmSearch And frmOptions) evaluated to 0,
the code will execute Case B which happens to be what you want.

* However, if you have case 3 above, the expression (frmSearch And
frmOptions) is evaluated to 1 using bit-wise And operation and your code
will execute Case A which is _not_ what you wanted.

In fact, the Case C will never be executed in your code because it it the
same as Case A, i.e. 1 in bit-wise operation and since Case A appears first
in your code, it will be executed if the "index" Variable happens to be
(evaluated to) 1.

I mentioned "frm" just in case ...

Does that explains why the code behaved as it did?

HTH
Van T. Dinh
MVP (Access)