Error when uploading

[Robert Thompson]

Everytime i try and upload via FP2000, it asks me whether i want to replace
the modified links, so i say YES TO ALL

Then it says: The file 'vti_cnf/filename.htm' exists on the destination
server byt does not exsist in the current Web. Would you like Frontpage to
remove it from 'htdocs'?

i've tried YES TO ALL and NO TO ALL, several times but every time it will
always say:

"Error 550 acessed denied"

Has anybody experienced this problem before, and if so would they be kind
enough to possibly tell me how to get rid of it?

Thanks

Lewis