How to connect four edi devices?

[Josef Lowder]

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What is the correct way to connect four edi devices? 
I have an older computer that has a 20-gig hard drive, 
an older cd burner and a recent dvd player and I want 
to add an older 6.4-gig hard drive. 

The 20-gig hard drive is partitioned with win-xp and 
Xandros and the older 6.4 gig drive had an older version 
of redhat that I want to replace with pclinuxos. 

Does it matter in what sequence the drives are connected?