Dwizz,

Looks like there is datatype problem with the values you are trying to pass to the ServerSpec method. What is the signature for that method? If they are expecting anything other than string, you'll need to cast the values from the dropdown lists to the appropriate types that the method expects.

-Peter

Okay, the ServerSpec method is as follows;
Function ServerSpec( _
                ByVal server As String, _
                ByVal colour As String, _
                ByVal processorSpec As String, _
                ByVal noCPU As Integer, _
                ByVal memAmount As Integer, _
                ByVal memConfig As String, _
                ByVal hDDSpec As String, _
                ByVal noHDD As Integer, _
                ByVal rAID As Boolean, _
                ByVal rAIDType As String, _
                ByVal fDD As Boolean, _
                ByVal opticalDrive As Boolean, _
                ByVal opDriveType As String, _
                ByVal tapeDAT As String, _
                ByVal tapeDATType As String, _
                ByVal notes As String) As Integer

and on button click event, as follows;
Sub Button1_Click(sender As Object, e As EventArgs)
    ServerSpec( _
                DropDownList1.SelectedItem.Value, _
                servercolour.SelectedItem.Value, _
                DropDownList2.SelectedItem.Value, _
                DropDownList3.SelectedItem.Value, _
                MemAmt.SelectedItem.Value, _
                MemCfig.SelectedItem.Value, _
                DropDownList5.SelectedItem.Value, _
                DropDownList6.SelectedItem.Value, _
                CheckBox1.Checked, _
                raid.SelectedItem.Value, _
                FDD.SelectedItem.Value, _
                CheckBox2.Checked, _
                CDType.SelectedItem.Value, _
                DropDownList4.SelectedItem.Value, _
                DropDownList15.SelectedItem.Value, _
                Additional.Text)
                msgbox("Quote Saved Successfully, QuoteID = ")
End Sub

I managed to solve it, thanks everyone for helping me, I just changed Boolean to String and the checkboxes to dropdownlists (took the easy way out).

But once again thanks to evrybody who helpped me.

D