I don't know much more about linux,and i need to know about it .I heard that there are two types of environment in linux that is kde & gnome ,and i need to know more about these?
And also i need to know which OSes use kde and which one use gnome?
also which is best? that is ,i need a explanation based on comparisons

i also wishes happy valentines day to all members of this community

There are actually more choices than KDE and GNOME, but those are the ones that most people seem to be starting out with. Others like Xfce and Fluxbox and a few others are gaining in popularity also.

Saying which one is best is like saying that your favorite brand of car is best. Or toothpase, or soap, etc. They all have strengths and weaknesses. If they didn't, there would only be one to choose from.

Your best answer is probably to do your own research and experiments. Most of us here have tried several distributions. It's call disto-hopping. Visit www.distrowatch.com and poke around there on a regular basis. You can find out all kinds of information on many distros including user reviews.

It will take some time and learning, but eventually YOU will become the absolute and ultimate authority on which distro and DE is best for YOU.

For most distributions, you can install both, and select which one you want to use when you log in. This will also allow you to run a kde based app like amarok even when you are using gnome. Examples are SuSE ,Fedora and Mandriva.

Ubuntu is different in that it has a different distro for each desktop environment. If you want Gnome, get Ubuntu. If you want KDE, get Kubuntu. If you want xcfe4, get Xubuntu.

Yes and no. Yes, if you want kde, getting kubuntu will give it to you. But if you have kubuntu, you can add another GUI (Gnome, XFCE, etc) you can add them from the package manager without, in any way, getting rid of kde to get a new distro and without multibooting...Linux will boot and a 'chooser' will come up asking which of the GUIs you want to log in to.

So, in that sense, the things on a Kubuntu disk aren't a different distro so much as the same distro as Ubuntu (Gnome Ubuntu) but with a different choice of GUI.

Always said this was a silly way of naming things....

guys when looking at a DE, what questions should I be asking myself?

eg: I want to have x in my DE. therefore y is a good DE

eg: I want to do developing so DE z is good

eg: the Gnome DE is good for x the KDE DE is good for y

thx

When it comes to DEs you should really, really just take some time to try out the ones you're interested in - give each of them a month or so. Try customizing your DE, play with every setting out there.

I started with Knoppix, then Slackware - both had KDE by default, I got really used to it and liked it - apart from having incredibly tough issues when trying to customize it (it seemed so hard and time-consuming) it was great. I truly didn't understand how people could use Gnome, back then I would find Gnome simply ugly. One day, playing around with a fresh Gentoo install I decided to give that ugly Gnome another try. And I never returned to KDE - for some weird reason I started to like the simple look of Gnome, menu placement/categories, the top panel turned out to be pretty useful and theme customization was something that required a few seconds. Sure, there were some problems (default terminal size, weird default nautilus behavior, huuuuge icons) but those were all problems I was able to solve in a few google searches.

I still like to give other DEs/windows managers a try every once in a while, for me it's the only way to determine what suits my needs best (giving LXDE a shot right now). I like to change things from time to time, I get bored easily - but Gnome is the DE I'm most used to. And that's what matters, right?

Hope you find your DE.