Windows 7 has been out for a while http://windows.com
there are, and i am using. and downlaoding them
its an operatig system in windows comps its in building
No, Windows 7 is Microsoft's New Operating system. There is also Windows Vista before Windows 7 but newer than xp. The operating Systems go like this, from oldest to newest. Windows XP Windows Vista Windows 7 Windows 7 is still currently in Beta stages and have released a RC (Release Candidate) of their Windows 7 Ultimate. Windows 7, in some versions, has a capability to run in windows XP mode, this may be what you are referring to.
No.
In my opinion, no it is not, the Beta expires on August 2009, the RC expires on July, 2010, however, if you plan to purchase Windows 7, I highly recommend upgrade as Windows 7 has passed several benchmarks showing that it is faster and performs better than it's predecessors.
if you mean operating system, Windows 7 (in beta)
There is so called "Software release life cycle". Beta version is the third stage. Beta product is somewhat stable for mass testing but not all features are implemented or they might/will change in next versions. Beta product is in early development stage. It is only released to test it as much as they can. Several millions of people will test software faster are more accurate then doing inside testing.
Windows 7 beta was a beta release intended to test. This is one of the phase of software release cycle and testers test the software for any potential bugs, whereas Vista and XP are the stable released software.
Not legally. No release version of Windows is made available free of charge, and the beta period for Windows 7 has ended.
It's free (prerelease only) you can get it from microsoft.com
It's beta, it means that it has some glitches (it can be ustable too) and most likely it will be hard to find drivers for it.
Yes, Gmail still works on Windows 7.