You can either mod your own bios to "unlock" it or use one from the stickied thread.
BUT, software OC'ing is pretty much not working even with the "unlocked" bios from driver versions ABOVE 169.04.
SO, what I did is...
Well, good luck.
I found that with Vista and the newer driver sets that there was not enough memory bandwidth to drive the desktop when the powermizer settings set in (2D mode) so by increasing the 2D memory speed to 121mhz or above...
You should be happy with it.
It does not have a separate wireless/wired MAC address filter (at least with the last firmware version available) so if you use MAC address filters you will have to add both your wireless and wired MAC...
It depends on what you use your laptop for whether you will notice a performance increase with the extra cache (the extra mhz is negligible).
I find the extra cache really helps with things such as video encoding, CAD stuff etc.
I...
The 635 is supposed to be a real nice performer (better than most when it comes to running n with b/g).
You may want to hold off a bit longer (like me) until about end of the 1Q of this year as many new dual band routers are coming...
What exactly do you mean "scrambled"
Do you mean vertical or horizontal lines?
If vertical, try upping the 2D memory speed to 121mhz or above (default is ~100).
You will need to edit your vid card bios and then flash the modded...
You will want to stay away from the "non-oem" batteries as they are usually cheap and will damage your system (plus dell wont warranty them with non-oem batteries installed).
As for being "12cell" that is because they...