need help to activate autocad 2009

salam
friends,,please i have autocad 2009 for 19 days left,,i was not able to
activate it,,,i have the serial and the crack,,but i can not activate it

please can someone help me before i remove it and reinstall it over and over,,thank you
this thing never work for me:

Install AutoCAD Architecture 2009.
2. Start Autodesk Architecture 2009 and Select Activate the Product
when ask for activation, select Enter an Activation Code
Use as serial : 653-12354321 or 666-98989898 or 666-69696969
Write down the request code.
3. Fire up the xforce keygen and generate an activation code
based on your request code. Continue the registration process
Copy and paste your generated activation code ..

Restart Autocadorks for me:

thank you again,,,,