What is the difference between Windows Vista Home Premium upgrade edition ?

From the Microsoft site, here are the things 'Vista Ultimate' has that 'Vista Home Premium' doesn't;
- Windows complete PC backup and restore
- Fax/Scanning utility
- Remote access to business resources
- Data protection with 'BitLocker drive encrypion'
- A collection of smaller extra features

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Oh, and it's about $60 more expensive (not worth it if you ask me).
As for running 'Home Premium 64-bit', the recommended specifications and features are;
-1 GHz 64-bit (x64) processor
-1 GB of system memory
-40 GB hard drive with at least 15 GB of available space
-Support for DirectX 9 graphics with: WDDM Driver

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128 MB of graphics memory (minimum)
Pixel Shader 2.0 in hardware
32 bits per pixel
-DVD-ROM drive
-Audio Output
-Internet access
Remember that these are recommended and so not necessarily required, although even with the recommended specs, vista will probably seem very slow. If you like windows, i'd recommend 'Windows 7'.
Hope this helps.
I just reinstalled windows Vista on my computer and have finished re-installing all of my drivers. For some reason when I go to change the color of my toolbar in Windows Color and Appearance i get a completely different menu than I used to get (and everybody else) and I don't even get a color change option. Anybody know how to fix this?

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I am looking for a nice and free screen capturing program that is high-quality. It also needs to work with Windows Movie Maker. Any responses will be appreciated.
Well, I haven't done it in a while but CamStudio was pretty good for me. It's open source so it's free. The FPS you get can depend on the power of your computer and the options you use, but I never bothered with those too much. I think it outputs in AVI so if it doesn't work in Windows Movie Maker right away (and I somewhat doubt it since AVI is such a basic format), you could convert it using Super or something similar to wmv format.
If you're looking for a commercial product, you may be able to do better.