Windows Vista is an operating system, not an application. It does not run "on" Windows 7 so it cannot be said to be "compatible" with it. Drivers and applications written for Windows Vista will continue to work on Windows 7. The reverse may not necessarily be true. Vista and 7 use the same kernel, so there shouldn't be anything that doesn't work on 7 that works on Vista, but compatibility mode should fix most problems you would have.
No.
This shouldn't be a problem normally, since you paid for a copy of that OS. The operating system should have drivers for the desktop, and it should install onto the desktop without any problems
Yes, you can.
Yes, it does.
Yes if you right click on the game file and click troubleshoot compatibility then set it to windows vista
Simple. You install 7-Zip.
Sure, there are lots of free applications available for Windows.
Windows Vista laptops will only be available on the second hand market. In addition, it will be difficult to obtain drivers for a modern laptop that officially support Windows Vista. It is even hard to find a Windows 7 powered computer, as Microsoft is pushing Windows 8 hard, despite its unpopularity.
XP, if you can scratch Vista and go for Windows 7
my opinion back up important files then format the laptop, install a fresh Operating system such as xp, vista, windows 7 even Linux which ever you prefer. if you do not know how to do this then Google it there are many tutorials out there.
Windows 7 will be the best choice for a laptop computer. Vista is the older Microsoft operating system, and has more bugs and unsupported features built in.
if you mean windows explorer 7, then just download it from the Microsoft site.