Login \ Auth problem

Hi all , ive setup a C4 server on a dedicated machine.
it loads up fine (and fast) but when i try to login from the client it does nothing al att , when i click enter multiple times it says wrong username \ pass and disconnects me

here is what the AuthD says:

http://img186.imageshack.us/img186/2439/error7ft.th.jpg

server files: C4 Karnage pack , easy to use Dll
os: Windows 2003 server enterprise
sql: mssql 2000
pc: p4 3000 , 2 GB ddr , 80 GB HD , 4 GB page file , 100 mbit internet connection

please if any 1 know what is the problem help me

ICQ: 169619199

Email \ MSN : quicks2k@gmail.com

ty

EDIT: i know you answered this already in this post:

http://forum.ragezone.com/l2-server-...light=flowerl2

but i didnt understand fully what is the problem

if Enae of ShawnB can give me some advice it would be my lucky day

That error occurs because of bad packet formatting client-side, it's sending an invalid ID (as you can see by the extremely long number). Not sure what the fix for this is off the top of my head, I haven't worked on this stuff in a while now.

Damn, ive got this error, anyone know a fix?