CD contents

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I want to download debian 3.0r1 forn an AMD Athlon XP 1600+, HD and DVD reader 
ATA100, MB with chipset VIA KT266A. 
In your documentation there are informations about contents of CD 1 to 5 but in 
the ftp directory I found 7 ISO CD. 
What iso must I download? 
 
Thank you. 
Bye, Nicola