problem whit IIS

I have a problem whit IIS on WinXP. I had try to uninstal and instal again IIS, but no results. I have tested webwizforum 6.28 and 6.32 and 7 but its not working. 
Ffirst error I get is this:

Error Type:
Microsoft VBScript runtime (0x800A000D)
Type mismatch: 'CDate'
/forum/common.asp, line 228

so I go that line in common:

Session("dtmLastVisit") = CDate(Request.Cookies"ForumVisit")("LastVist"))

and remove CDate( **** )
then I get the same error on line 238

If CDate(Request.Cookies("ForumVisit")("LastVist")) < DateAdd("n", -5, Now()) Then

and again I remove funkcion CDate( **** )
but them I get error:

Error Type:
Microsoft OLE DB Provider for ODBC Drivers (0x80004005)
[Microsoft][ODBC Microsoft Access Driver] Operation must use an updateable query.
/forum/active_users.inc, line 172

so I go in Contorl Panel > Administrative Tolls > Internet Infromation Services



There I turn on Write but it still wont work.

line 172 in active_users.inc is:

     adoCon.Execute(strSQL)

Help!!!!

Just change the default: Session.LCID = 1033 to Session.LCID = 1050

in both common.asp