quote:
I already have unpartitioned space to format and install to.
If you want to install to a new partition
and fools Windows into assigning it the C: drive letter and installing the boot loader there, you can accomplish that by temporarily changing the old partition's type, so that Windows completely ignores it.
You can do that using Linux fdisk, which you should have handy given you were doing something with a LiveCD before. Have it display your partition table ("p" if memory serves), make note of the current type (should be 07 or 87), "t" to change, set it to something non-Windows, such as Linux native (83). Save ("w"? read help!) and exit.
When you are done installing your Windows, repeat the process and put the old partition's type back to what it was. It will be assigned the next available drive letter on the following Windows startup.
Note that this assumes no other NTFS/FAT partititons will be visible to Windows setup. If they are, your unpartitioned space will not become C: but some other drive letter. You should hide other partitions the same way or, if they are on different physical hard drives, temporarily disconnect those drives.
The only downside to doing this is you are going to end up with drive letter assignments in an order different from the physical partitions on the disk. This is not an issue in normal use, but can sometimes confuse Windows setup in a repair scenario, should you ever need to do that.
