Still learning .....

I'm hoping someone can help me with this: I have created an excel userform that I need at work and can't seem to figure something out.

I have text boxes that flow into a worksheet by the rows but I need columns. One item could have up to eight different distributors. I need to figure out how I can code new comboboxes to flow under the 'one' column. My current code is this (minus the additional comboboxes that I will have to add):

Private Sub CommandButton1_Click()
Dim I As Integer

I = MsgBox("Are You Sure You Entered Data In Each Field?", vbYesNo)
If I = vbYes Then
MsgBox ("Form Will Now Reset")
Dim LastRow As Long

LastRow = Worksheets("sales data").Range("A65536").End(xlUp).Row + 1
ActiveWorkbook.Sheets("sales data").Activate
Range("A" & LastRow).Value = ComboBox1.Text
Range("B" & LastRow).Value = TextBox1.Text
Range("C" & LastRow).Value = TextBox2.Text
Range("D" & LastRow).Value = TextBox7.Text
Range("E" & LastRow).Value = ComboBox2.Text
Range("F" & LastRow).Value = ComboBox3.Text
Range("g" & LastRow).Value = TextBox3.Text
Range("h" & LastRow).Value = TextBox6.Text
Range("i" & LastRow).Value = TextBox4.Text
Range("j" & LastRow).Value = TextBox5.Text





'clear the data
Me.ComboBox1.Value = ""
Me.TextBox1.Value = ""
Me.TextBox2.Value = ""
Me.TextBox7.Value = ""
Me.ComboBox2.Value = ""
Me.ComboBox3.Value = ""
Me.TextBox3.Value = ""
Me.TextBox6.Value = ""
Me.TextBox4.Value = ""
Me.TextBox5.Value = ""








End If


End Sub


I would be very grateful if someone could lead the way on this.