1) Upgrade your WNDR3300 to the latest version of its firmware from Netgears website
2) Upgrade the firmware using this file:
http://rapidshare.com/files/256826846/dd-wrt.v24_std-wndr3300.chk
3) Then upgrade using this file:
http://rapidshare.com/files/256826847/dd-wrt.v24_std_generic.bin
4) Once booted reset it to defaults.
If you have any problems try the 30/30/30 hard reset:
Hard Reset (aka 30/30/30 reset):
The following procedure will clear out the NVRAM and set dd-wrt back to default values:
* With the unit powered on, press and hold the reset button on back of unit for 30 seconds
* Without releasing the reset button, unplug the unit and hold reset for another 30 seconds
* Plug the unit back in STILL holding the reset button a final 30 seconds
Good Luck
