[RESOLVED] [2005] Cell Image Backgrounds

[neef]

I made several images with transparent backgrounds for a column of datagridview cells, thinking I could easily set the background color of the cell to whatever I want depending on the alternating rows and highlighted row.

It's simple code and it should work (this is in the event to fill the datagridview for alternating row colors; the image is in the last column):

  
        Dim RowCount As Integer = dgvRoster.Rows.Count - 1
        Dim Cell As DataGridViewCell = dgvRoster.Rows(RowCount).Cells.Item(dgvRoster.Columns.Count - 1)
        If RowCount Mod 2 = 0 Then
            Cell.Style.BackColor = Color.AliceBlue
        Else : Cell.Style.BackColor = Color.Azure
        End If

The results are ugly; the transparent parts of the images shine right through to my coding window. My code has no effect on the images whatsoever.

I'm wondering if there's a better image format for transparentcies than the one I chose (.gif). Would jpegs or some other format yield better results or am I totally barking up the wrong tree with my approach?