Insert into Access Database

Having major problems with Inserting form details into an access database, keeps bringing back:

Error Type:
Microsoft JET Database Engine (0x80040E14)
Syntax error in INSERT INTO statement.

but as far as I can see, the statement seems to be fine! somebody please help me out! before I resort to fisticuffs with my pc!

heres the code:
<%
`Create object. In this case Connection to a database
Set Conn = Server.CreateObject("ADODB.Connection")

`Select provider
Conn.Provider = "Microsoft.Jet.OLEDB.4.0"
`Select data source.
`Server.MapPath function is equivalent to app.path function of VB
`It returns the directory in which the script is present
Conn.ConnectionString = "Data Source=" & Server.MapPath ("db/esurvedata.mdb")
`Open the connection
Conn.Open

Sub CheckValid(Str)
Str = Replace(Str, "`", "``")
If Str = "" THEN
Str = " "
End If
End Sub

strFname = server.HTMLencode(Request.Form("firstname"))
strSname = server.HTMLencode(Request.form("surname"))
strCname = server.HTMLencode(Request.form("companyname"))
strPosition = server.HTMLencode(Request.form("position"))
strEmail = server.HTMLencode(Request.form("email"))
strPhoneno = server.HTMLencode(Request.form("phoneno"))

Call CheckValid(strFname)
Call CheckValid(strSname)
Call CheckValid(strCname)
Call CheckValid(strPosition)
Call CheckValid(strEmail)
Call CheckValid(Phoneno)


strSQL="INSERT INTO esurvey(firstname, surname, companyname, position, email, phoneno) VALUES (` " & strFname & " ` , ` " & strSname & " ` , ` " & strCname & " ` , ` " & strPosition & " ` , ` " & strEmail & " ` , ` " & strPhoneno & " `)"

conn.execute strSQL
%>

...help!

thanks ljamal for the advice on the sub but unfortunately after those changes the error is exactly the same -

Error Type:
Microsoft JET Database Engine (0x80040E14)
Syntax error in INSERT INTO statement.

tested the sql statement in access and works fine, so I'm even more confused...

its all good!!  looks like the coloumn name 'position' maybe a reserved word in VB or something. All I had to do was change the coloumn name and it worked.

Thanks for your help though ljamal