It sounds as though you have a leftover dial up configuration.
Open IE. In Tools/Internet Options/Connections see if a dial up 
conection is listed and delete it.

dorothy Jones wrote:
> I have a problem reconnecting to the internet. I boot up, connect and
> everything is okay, but if I disconnect but leave my PC running, then
> try to reconnect I get all sorts of messages like "There is no dial
> tone" "Connection has failed" The only way I can go back online is to
> restart my PC. Can anyone explain what is happening and how to
> rectify the problem? I run Windows 98se and have loads of hard drive
> space and memory. I use Wanadoo Broadband with Internet Explorer 6
> and Outlook Express 6 and my PC is protected by Trendmicro Pc-cillin.
>  Thank you Dorothy Jones
> 
> The NOSPIN Group is now offering Free PC Tech support at our newest
> website: http://freepctech.com
> 

               The NOSPIN Group Promotions is now offering
                 our special coffee mugs and mouse pads
              with the PCBUILD logo...  at a great price!!!
             http://freepctech.com/goodies/promotions.shtml