Question about "Import Foreign Disks"

Hello, I had two RAID-1 (mirrored) arrays on my Win 7 PC, when suddenly they both disappear from the active disks list. Perhaps it's because I let a foreign company edit my registry remotely to resolve a problem with their s/w. The four drives now show up as "Foreign, Dynamic" disks. I see the "Import Foreign Disks" feature but I have a few questions. When I try this feature (but don't...