pre-installed

I just bought a dell inspiron 15r 5521 pre-installed ubuntu. I want to get rid of it and install windows instead.I have both 7 and 8. So which one should I install, windows 7 or 8? ( not very comfortable with the interface of win8) or have both with dual boot and set win7 as default OS? And...

i have an acer 5742G laptop pre-installed with(genuine) windows 7 so i want to backup *only* windows 7 OS to my pendrive(16GB) actually there is is a an acer utility in my PC for that but it will backup the windows 7 OS and some acer pre-installed software to 3 standard(not the 8gb) DVD discs...

Am planning to purchase an ultra-VFM Netbook for very basic computing on the move. Need a Netbook with an OS pre-installed & can be used simply by opening the packaging - never installed any OS on a lappie before and don't want to do it for the first time now - want to play it safe. Please...

is it? does the fedora 7 provided by this month's digit come pre-installed with all the codec like mp3, mpeg, dat, etc. . ? and whats the disk space required for full installation?

source: *linux.slashdot.org/linux/07/02/19/2212213.shtml

After Apple's release of Boot Camp, allowing customers to install and run Windows XP natively on its Intel-based Macs, many predicted that it would simply be a matter of time before Macs started shipping with Microsoft's Windows XP preinstalled. Now it seems the inevitable has occurred. One of...