Please help with Data type mismatch in cr

The error tells me that the problem is in the following line:

rsCheckUser.Open strSQL, strCon

The rest is my actual code:

<%
Dim adoCon           
Dim strCon          
Dim rsCheckUser           
Dim strAccessDB      
Dim strSQL           
Dim strUserName      

strUserName = Request.Form("txtUserName")
strAccessDB = ""
Set adoCon = Server.CreateObject("ADODB.Connection")
strCon = "DRIVER={Microsoft Access Driver (*.mdb)};pwd=; DBQ=" & Server.MapPath(strAccessDB)
adoCon.Open strCon
Set rsCheckUser = Server.CreateObject("ADODB.Recordset")
strSQL = "SELECT tblUsers.Password FROM tblUsers WHERE tblUsers.UserID ='" & strUserName & "'"
rsCheckUser.Open strSQL, strCon
If NOT rsCheckUser.EOF Then
     If (Request.Form("txtUserPass")) = rsCheckUser("Password") Then
          Session("UserGood") = True
          Set adoCon = Nothing
          Set strCon = Nothing
          Set rsCheckUser = Nothing
          Response.Redirect"authorized.asp?name=" & strUserName
     End If
End If
Set adoCon = Nothing
Set strCon = Nothing
Set rsCheckUser = Nothing
Session("UserGood") = False
Response.Redirect"unauthorized.htm"
%>

 

Microsoft OLE DB Provider for ODBC Drivers error '80040e07'

[Microsoft][ODBC Microsoft Access Driver] Data type mismatch in criteria expression.

/check_user.asp, line 16