I Used unetbootin to stick MEX distro
http://mex.exton.net/ on my N9 (it's just ubuntu 12.10 with all 7 seven desktops to choose from).
Go into your windows boot menu and stick the USB drive as first priority to boot from. You can try and use Mex from your N9 without installing it. You will have to go into the boot menu of whatever windows PC you are using and change the boot priority to USB and go into settings on your N9 under accessories usb and choose mass storage as the permanent choice or "always ask" as the permanent choice and pick mass storage when you plug your phone into a computer.

The problem is after a while I got sick of accidentally plugging my phone in before starting my PC and then it will start the "live" version of MEX off of my N9 instead of the installed version existing on my PC already because I erased Windows off my computer and installed Mex distro permanently on my PC.
And then when I went to erase all the Mex stuff off of my N9 I think I must have erased something I was not supposed to because I can no longer find any files I download from my N9 browsers.

When you use the MEX distro off of the N9 it will give you the choice if you want to permanently install it. If you choose yes it will install from the N9 but then it will connect to the internet and try to update.

You might be able to also get a fake windows XP that boots from your N9 by downloading one of the old mojopacs even though they are no longer in business.