Re: Windows 7 and the Raring Ring Tail
1. Yes, file access and tethering should work out-of-the-box.
2. Operating systems must be stored on Primary partitions, not Logical partitions. Put your Windows system and Ubuntu system as the first two partitions.
You can't install programs to a separate partition on Ubuntu. Not sure why you would do this on Windows either. Just like in real life, the more partitions you have, the more space you lose.
You can do your partitioning in Windows or Ubuntu, your choice. The Ubuntu partition needs to be ext4, not NTFS, but the Ubuntu installer can reformat an NTFS partition to ext4.
3. Basically sounds okay, but you will have to try it to know for sure. Try running Ubuntu from the CD before installing. You can check tethering too.
4. Having no internet connection is not a problem during the installation phase, but it's easier if you do have one. You can click a button during installation to download codecs and media support in the installer, which of course requires an internet connection. These things can be added afterward but you might as well add them in the installer. You can use your phone tethering for this, just don't tick the "Get updates" box because this will download a lot of data!
I try to treat the cause, not the symptom. I avoid the terminal in instructions, unless it's easier or necessary. My instructions will work within the Ubuntu system, instead of breaking or subverting it. Those are the three guarantees to the helpee.