Multiple User Data Entry?

We need to have various users input data into a spreadsheet, so I have created a userform. Just need some code with the submit button to populate the central sheet, I think that I will need it to open the sheet, paste the data, save and close it.

This is my submit button as it stands, with the form and spreadsheet in the same workbook:

Private Sub btnSubmit_Click()
Dim RowCount As Long
Dim ctl As Control
RowCount = Worksheets("Sheet1").Range("B1").CurrentRegion.Rows.Count
With Worksheets("Sheet1").Range("B1")
.Offset(RowCount, 0).Value = Me.coboPropSalutation.Value

[code]....