BossieB 0 Newbie Poster

I have a problem with my video editing PC. Although having spent a large amount of time investigating solutions on the web, I consistently find recovery software which is either focused on recovering the boot sector, or alternately, specific data files on the HDD.
My problem, however, is the following.-- My PC has a 120 Gb HDD housing the OS (Windows XP), it also has 2 x Seagate 400 Gb HDD's, which are (spanned ?) i.e. linked , as one 700-800 Gb (E: drive).
I suddenly got a message that the E:'s MFI is corrupted, and in Windows explorer I cannot see any of the files. This obviously seems like the MFT is sick. I am running some "recovery software", which confirms the problem. My question is the following:
Is there any software which will "rebuild" the MFT in situ, as I do not have capaciy to restore the +-500 gigs of data (AVI's) on the disc's. I do have backups of the data on +- 90 DV tapes, but this will be a mission to restore.
Your help will be greatly appreciated.