Dell Inspiron 6000, XP SP3.

I did something long time ago (can't remember now) to disable wireless networking. Now trying to  get it back to work but couldn't.

1. I assume one can enable

2. The Wireless Network Connection shows 'Not connected' (only disable and repair options available).
- When try to disable it, it shows "It is not possible to disable the connection at this time. This connection may be using one or more protocols that do not support Plug-and-Play, or it may have being initialized by another user or the system account."

- When try to repair it, it shows "...because the following cannot be completed: disabling the wireless network adapter. Make sure your network adapter is properly installed" (I have not physically done anything to the network adapter)

How to make the wireless network (internet) working again?

Thanks for the help in advance,

Dennis