Frontpage Error please help

[@Style]

Hi All

I need some help, I'm sure it will be easy for someone out there to put me straight.

My site is made in frontpage, all has been going well for 9 months. One day for no reason as soon as I opened any file frontpage had problems opening the sheet.css file.

Frontpage is constantly "retreiving file C:\Documents and Settings\Administrator\Desktop\Website\fashion-jewelry-shop.com\sheet.css"

This causes it to hang and I cannot work.

All I can do is open the sheet.css file first then open the file I want to work on then it is OK, but all the formating is not shown correctly in normal view and it makes it difficult to work.

Hope that makes sense

Please help it is really annoying me

Thanks

Mark