where to recover data to from a non bootable hdd

hi, a virus destroyed the boot on my hdd, and when trying to use recovery console in dos bootcfg- list-i get no boot entries and bootcfg-rebuild-corrupt file system and chdsk-appears to contain one or more unrecoverable problems.how can i recover the files on the hdd before i do a clean install of xp i would be grateful for any help