I believe the original Netgear WGR614 Router drivers that come from the CD aren't compatible with Windows 7, depending on router version.
You can check here:
http://kb.netgear.com/app/answers/detail/a_id/11127/kw/Windows%207/r_id/100109Under 'Windows 7 Status for NETGEAR Routers'
If your using router version 9 or older (should be labeled under the router or on the box) you have to update the drivers from there website, if available.
WGR614v8 (Windows 7 Drivers):
ftp://downloads.netgear.com/files/WGR614v8_CD_230-10379-06v1.5.zip
WGR614v9 (Windows 7 Drivers):
ftp://downloads.netgear.com/files/WGR614v9_230-10609-08v3.6.zip
WGR614v10 (Already compatible)
Also 64bit Operating Systems will not work with older CD Drivers.
See if that helps first.