Unrevoked3 doesn't work with the new update. The links I posted in my last post will probably have info in them before this one would.
I know you can flash clockworkmod to your phone using an app called "RomManager", but I'm not sure if that requires root or not. It probably does. Aside from that, I don't know if there are any painfree ways to install it (that don't give/require root)
An app called "Astro File Manager" will let you copy files from you phone to your SD Card without plugging it into your computer. On that note, you can just plug your phone into your computer and "mount as disk drive".