Need Help: Trouble with Wireless Router Connection on MBP

Hi all.  I just bought a MacBook Pro (my first Mac ever) and love, love, love it.  However, one glitch is driving me crazy.  I do *NOT* have an airport but I connect to my cable modem through my netgear wireless router.  When my MacBook Pro goes into sleep mode, I lose the connection to the wireless router.  I have to go unplug the router to reboot it for the MBP to see it again.  I think it has something to do with how it is assigning the IP address.  Has anyone else seen this issue?  Know how to solve it?  Thanks so much.

See "Symptom: The network connection drops unexpectedly" on this page:
Troubleshooting Wi-Fi issues in OS X Lion and Mac OS X v10.6

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