vb class files

[Help]

Hello,

I am having a problem.
Here is my code.
The problem is that it will not let me type in
' Private as integer m_numToAdd%
Private as integer m_Total%'
In the general declerations in my class

Here is the rest of the code.

Option Explicit

Public Property Get NumToAdd() As Integer
      NumToAdd = m_numtoadd%
End Property

Public Property Let NumToAdd(ByVal vNewValue As Integer)
m_numtoadd% = inewvalue
AddNum
End Property

Public Property Get Total() As Integer
Total = m_total%
End Property

Public Property Let Total(ByVal vNewValue As Integer)
m_total% = inewvalue
End Property

Private Sub AddNum()
m_total% = m_numtoadd% + m_total%
End Sub

If anyone can tell me why I can not put the above in General Declerations and or know a link that explains writing class's would help alot.

Thanks in advance.