Error 6: The handle is invalid

[eXTREME2002]

Error 6: The handle is invalid

Every time i try 2 dial in using my 56K US Robotics modem, dialing occurs and i hear the squeaking sound of the modem but after a while, i hear the modem hangs up giving this weird message:

Error 6: the handle is invalid

I tried googling but i was shocked that i never saw any refrence 2 this error code number and the error message itself !! - any ideas in order 2 make a successful conection

P.S. 1. I use Win 2000 PRO and the latest modem driver
2. Looking at the Event Viwere. i have this message:
Event Type: Error
Event Source: ipnathlp
Event Category: None
Event ID: 31012
Date: 13-04-04
Time: 10:54:12 م
User: N/A
Computer: S_S
Description:
The DNS proxy agent encountered an error while obtaining the local list of name-resolution servers. Some DNS or WINS servers may be inaccessible to clients on the local network. The data is the error code.
Data:
0000: e8 00 00 00 è...


any ideas ???

[LBB]

I resolved this problem by removing the modem thru Control Panel > Phones and Modems and then I unistalled the modem in Device manager. Once the reboot was complete and it was reinstalled it was working again.

When you look on Control Panel > Phones and Modems you will notice that you see the modem is "not present" on any ports. If you try just unistalling thru Device Manger it won't work.