excel 2010 why does my web query have a default url and how do I change it

When I open Data > from Web the URL is already there and is sometime not available, so I can't change the URL to what I want it to be to actually run a query. Where is this default URL hidden and how can I delete it or change it to something else?

maybe Data - Recent sources - Right click - Remove from list

The "default" URL pops up from selecting Data > From Web. There is no option for Data > Recent Sources in Excel 2010. I also checked Data > Existing Connections, that URL isn't there.

Sorry mate but you'll need to wait for someone who has Ex2010.