[ALUG] Reassembling a RAID array

I have four drives containing mdadm RAID partitions: /dev/sda1 through /dev/sdd1 I believe they were previously set up as RAID5, although it might have been two separate RAID1 arrays or one RAID10 array. How do I work out what they were, which drive is which, and configure the array on a new PC to access the data? (Obviously I need to do that without losing the data on them!) Mark Rogers -- Mark Rogers // More Solutions Ltd (Peterborough Office) // 0844 251 1450 Registered in England (0456 0902) 21 Drakes Mews, Milton Keynes, MK8 0ER