Booting error

I installed FC5 on vmware workstation.After installation it showed following error -:

Booting Fedora Core (2.6.15-1.2054_FC5)

root (hd0,0)
filesystem type is ext2fs,partition type 0x83
kernel /vmlinuz-2.6.15-1.2054_FC5 ro root=/dev/VolGroup00/LogVol00 rhgb quiet
Error 15 :file not found

press any key to continue...

After pressing any key it shows grub.

What should I do in such situation or shall I have to reinstall it again?

Plz help ?