Bad partion table

after updating norton 2003, i shut the computer down .
when i booted it, it started hanging in windows, i switched it off then back on. it then failed to get to windows. i started it with from a start up diskette, accessed c: & d: but could show the actual
contents. it was showing c;\raspore no drive c: & ‘damage bad file allocation table on d:. on scandisk it said boot sector too full, move some files.