If / Then And For Loop - Isolating File In Array

I have a For loop, its an array with 5 file names in it. The loop checks for the files in the path, and if the file is there it places the file in the corresponding sheet in the workbook. If it is not, I get the option to browse for the file. Originally all 5 files were required, however now the requirements changed and only 4 are required the last file "byband.csv" is not required. So they want the option a message box telling the user the file is not required they can browse or keep going.

I worked out the second part but only by taking "byband.csv" out of the loop and writing a separate procedure for it, I wondered if in my original procedure I could isolate "byband" and if not found go to another part of the procedure. Basically, I needed to do the following:

If the file in the array byBand.csv is not found, Then:

vmbProceed = MsgBox(strFifthImportFile & strMessage, vbYesNo + vbQuestion, strTitle)
If vmbProceed = vbNo Then
Exit Sub
Else

go to Line 1 in the procedure below.

Code:

Sub import_Employee_Data()

'This is Step 1 when the frmDataImportSplash is activated.
'This procedure imports the byEmployee.csv sheet. The procedure checks if the file is
'in the same directory as the template. If the file is not there, a browser window appears to allow the user
'to browse for the missing file. A series of message boxes guide the user through the process and
'verifies that the user picked the right file. The user can cancel the import at any time.

Dim strPath As String
Dim strFirstImportFile As Variant

[Code] .........