Connecting R8500

> I have my iMac computer hooked up to my wired cable mode[m]. [...]

   Does your "my wired cable mode[m]" have a maker and model number?

(Is it a simple modem, or a modem+router?)

> [...] Can I connect my Netgear R8500 to my wired cable modem signal,
> [...]

   Visit http://netgear.com/support , put in your model number, and look
for Documentation.  Get the User Manual, et c.  Set up the router
according to the instructions in the User Manual (et c.)?