Configuration not enabled

Hi,
I?d need to simply configure an ADSL account to connect to my ISP but I cannot because the following option is disabled:
Network connections/create a new conection.
The wizard begin but when it ask me for the kind of conection I chose manual setup /….
There, the options “Connecto using a dialup modem” and “Connect using a broadband connection with usr name and password” are dusabled
(sorry for the translation, my Windows and me are in Spanish)

What could be happening?

La card is OK, no conflicts TCP/IP components are enabled. harddware work fine. I?ve connected another HD and installed a ney copy of Windows and everything work fine, but in the actual hard disk I have many critical software instalations and I?d need to preserve them.

Thanks for your help!!!

Alberto