Ubuntu :: Keeping The Windows Because Need It To Run The Latest Version Of ITunes?

Ok so I have been using Ubuntu for a few months, but considering how I am a total noob at doing alot of things on it i wanna get some background info about a few things before I start screwing with it.1) On deviantart i see alot of people will totally customized desktops using something called GTK2, questions: how to get and how to use? (a nice tutorial page might help lol i cant seem to find it on google)

2) I have a computer running vista and I have Ubuntu installed onto it using Wubi. I am keeping the Windows because I need it to run the latest version of iTunes (unless wine can run it but I havent tried yet because my media folder is larger than the 30 gigs i have for ubuntu). I also want to keep my windows folders and Ubuntu folders completely seperate, so my question: is there a way to increase the partition size of Wubi to past 30 gigs? I have tried to use wubi-add-virtual-disk, but when i used it it successfully repartitioned but than i rebooted and it said that root.disk was missing and my entire Ubuntu was gone (lame i know). I also did all the recent updates from the update manager, but that shouldnt cause that problem should it?

2) a) lol if possible i would like to entirely create a new partition on my computer and install Ubuntu from there (simplifies alot of things), but i cant seem to shrink my existing hard drive... the max i can shrink is it 1.4 gigs. Does anyone know how to increase that space? (I have a 300 gig hard drive with 230 gigs free i wanna create a new partition with 210 gigs for ubuntu leaving windows with only 20 gigs of free space). I have looked at using Gparted to redo the partitions, but it destroys windows and I dont have a Vista reboot CD and cant get one cause i live in china o.o