It makes me wonder if it was a mistake to install Ubuntu from within Windows (does this mean I have "wubu"?).
I'd regard it as a "mistake". It just adds another layer of complexity. Which makes for a depressing "finding out how all this works" experience. It should be fun.
Use win to defrag the win drive. Backup your important personal files to an external disk as things can
Install linux-whatever, and have it shrink the windows partition to make space for linux. Install linux to the spare space. Let it install grub
on the MBR.
At next reboot, choose your OS of choice (linux!), and then let it apply the updates after it has found your network connection (so please do this with a wired connection, wireless you can always fix later, but you'll need the updates first as these will probably fix why your wireless (maybe) isn't working in the first place). Reboot after the upgrades (because you'll probably have had a kernel-upgrade) to linux.
Then customise things as you like them.
BTW I believe it is wubi
, not "wubu".
Note: The 'buntus >= 9.10 use grub2
as the default bootloader, this is still in "Beta" and buggy, and may not yet work reliably with a "wubi install".