Re: two hdd's
You can take the contents of C:\ to W:\ by simply opening My Computer, right clicking C:\, copy, open W:\, right click, paste.
As to your question about being able to take W:\ with the copied contents and use it as a boot drive in another computer, that will not work. There are a myriad of reasons, but the simplest of which is that your hard drive houses all of your hardware drivers.
The only way to get your other computer to work is if you have the operating system disc for it, you're willing to try a free operating system like Linux, or you're willing to purchase a copy of Windows.
[CPU: e6600 @ 3300 MHz] // [MB: ASUS P5N-E SLi] // [RAM: Patriot 'eased latency' PC2-6400 @ DDR800 5-4-4-12-2T] // [GPU: 8800GTX @ 650/1000/1600 (volt modded)] // [HDD: 2x Cavier 500GiB stripe] // [Chassis: Thermaltake Armor VA8000 (black)] // [PSU: Aspire(Apevia) 680w] // [OS: Windows 7 Ultimate x64][Cooling: water cooled GPU and CPU]
^ (9/7/2010): Ha, I remember when that was the stuff. My water cooling has since leaked and fried my mobo. So now I'm rocking an MSI laptop with an i5 430m :)