What was your previous operating system? If it was Windows 98 or so, the software in the box with the Rio Receiver will not work in Windows 2000. You have to use the updated server software. You can find it here:
ftp://ftp.diamondmm.com/pub/multimedia/rio/receiver/

The file you want is mercury_v103.exe
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-Rob Riccardelli
80GB 16MB MK2 090000736