[TYPO3] Can't access the Dummy site

[tintin at tintin.ws]

Hi

i installed the TYPO3 Winstaller.exe yesterday and able to access the  
Dummy Site with username & pwd typo3. Now I started my TYPO3  
Winstaller & can't access the Dummy Site. As far as I can remember, I  
change the Template yesterday & then Exit on it. Can i still access  
the Dummy Site? It's quite funny because the Quickstart Frontend &  
Testsite Frontend I can access on it.
Does anybody have any idea why is this so? Has it something to do with  
the template changing?

thanks