Ok, I think I just got confused about vgreduce, which seems to be a way of removing an entire unused physical volume, not resizing within a physical volume. I looked at the entire list of vg* and lv* commands and its starting to look like resizing a volume group that resides on a single hard drive is something that is simply not possible. I think my only hope is to delete the bloody thing.
Quick question: When I go into partition magic from xp I see an 8E partition (the volume group) and a small ext3 partition (I assume for booting) So if I simply delete the 8E partition I should be able to a. still use grub to boot into windows
and b. reinstall fedora with a smaller initial volume group, right?
(of course if anyone knows an actual way to resize the thing that would be ideal...)