sorry itbcn8 i must disagree.
that may be your personal experience but what you should have said is "be careful not to skip any instructions or steps, or dire consequences will follow" ;)
partition shrink is the way to go. first, you want to thoroughly defrag and consolidate-free-space before doing so. or..... like what i did... make it the first thing you do when you get your new comp before downloading or installing anything so that the partition is free to shrink at your will.
a normal install is always always the best option, however, it's the hardest option and rightfully so.
let this be your bestest friend:
edit-- arg i just dug up an old post. shame on me :(