Lion (OS 10.7) is pretty ram hungry, and always felt half baked. For the hardware in question I think the OP would be better off installing Snow Leopard (OS 10.6.8)
Your "Bootcamp" partition is just an NTFS partition. GParted doesn't care that it's on a Mac. Increasing the size of this partition should be no problem.
http://guides.macrumors.com/Extend/Resize_Boot_Camp_Partition#GParted_Live
You should be able to resize the Windows partition using GParted
Make sure you backup your system before attempting anything. Even "non-destructive" partition edits can be dangerous.
At my university's IT department we used Gillware for drives that were beyond ddrescue or Photorec. Great service and generally lower prices than DriveSavers.
If you in fact have a 2.0GHz DP 2004 Powermac G5, then that's the service diagnostics that you need (straight from Global Service Exchange). It will actually boot just fine from a CD. Once you boot the disc and see the VERY spartan OS 9 style interface, you'll understand why it's so small.
I picked up an Asus U36JC about a month ago and have been very happy. The build quality is very good and the battery life is great. It does get a little warm during processor intensive tasks but it's tolerable. Not nearly as hot as my 1st generation Macbook Pro :D
Microsoft has now admitted that DE was pulled from Vail due to a failed implementation.
http://www.wegotserved.com/2010/11/24/microsoft-admits-drive-extender-implementation/
You could pick up a refurbished/used iPod to fill the in car void. I'd say it's a pretty small sacrifice to escape Apple's walled garden (at least for your phone).