PANIC ! Help please. Missing menu option in VC5.0

Hi,

I was working on a dialog .cpp file in VC5.0 dev. studio last week. I went to change some code in another source file. When I returned dev. studio complainedit could not open the file. I checked and found two source files were changed to binary form and could not be read. A bad day I thought and re-did all the lost work. That's life. Not quite,

I load the files again. The compile/ links setting options etc. under Project->Settings were all disappeared. The only tab option left was 'Debug'. It made no different if I change to Win 32 debug build or release build. Please some one help if I can recover the settings? Many thanks.

Will