microsoft excel - Convert a column into a comma separated list

I have the task of creating a simple Excel sheet that takes an unspecified number of rows in Column A like this:

1234
123461
123151
11321

And make them into a comma-separated list in another cell that the user can easily copy and paste into another program like so:

1234,123461,123151,11321

What is the easiest way to do this?

Answer

I actually just created a module in VBA which does all of the work. It takes my ranged list and creates a comma-delimited string which is output into the cell of my choice:

Function csvRange(myRange As Range)
    Dim csvRangeOutput
    Dim entry as variant
    For Each entry In myRange
        If Not IsEmpty(entry.Value) Then
            csvRangeOutput = csvRangeOutput & entry.Value & ","
        End If
    Next
    csvRange = Left(csvRangeOutput, Len(csvRangeOutput) - 1)
End Function

So then in my cell, I just put =csvRange(A:A) and it gives me the comma-delimited list.