Ok, this may be a dumb question, but is there actually a difference between the cables you use to connect HDs to Motherboards? How can I tell what kind of cable I have?

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Athlon T-Bird 900 Mhz
MSI K7T-Pro 2A
128 MB PC-133
64 MB PC-100 (2x)
20 GB Maxtor ATA 33/7200
6.4 GB Maxtor ATA 33/5400
Hercules MX II - 32 MB
HP CD-RW
Pioneer DVD (105-S)
Monster Sound MX300
19" KDS Flat Monitor