Lot of people are having trouble using Frontpage in Windows Vista like "Server Error: The Server extensions were unable to access the file PATH\_vti_pvt\service.lck", the solution is simple since the problem is just that Vista is not giving permission to Forntpage to edit your old websites files after an upgrade or files from another hardik or partition.
all you have to do is to Uncheck the read only box in the website folder properties.
If this didn't work click on Security >> Your Username >> Give full permission .
That's it, enjoy editing your websites using Frontpage in Windows Vista.
If you have any problems feel free to leave a comment, also a thank you comment will be appreciated.