The other drives are not being recognised because they will be formatted as NTFS partitions, rather than as FAT32 partitions which Windows Me uses. The Windows 9x versions do not have the capability to use NTFS partitions.
To enable them to be used without formatting, you will need to install a 3rd party software utility which adds that capability to your version of Windows. There are free utilities available which allow Windows Me to READ an NTFS partition, but to get full read/write capability you will have to pay for the software, I'm afraid.
Here's the most widely used one:
http://www.purenetworking.net/Products/NTFSfor98/NTFSfor98.htm
Catweazle
Grandad
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