asp.net configuration

hi all,
 
when trying to press the asp.net configuration button in visual web develpoper express i get an error:
 
could not launch C:\program files\........firefox.exe
 
i did have mozilla installed a while ago but use ie7 now. is there anyway to change this so it will launch the asp.net configuration wizard?
 
thanks again for all your help,
 
andy
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