There was a site that you could go to to calculate your bandwidths but I forget where it is. Hopefully someone will see this and post a link to it.
Also, you must consider the fact that some ISP have p2p traffic controling, meaning that they can regulate speeds that come from p2p filesharing. Call your ISP and find out.

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iMac G4 OSX 10.3.9
RAM 256MB
LW 4.10.5 Basic
ADSL anything from 3 to 8Mbps/around 1024kbps

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