I have already had the WIN2000 systems, I want to install LINUX, who can give me some suggestions that?
The best is an installation steps elucidation!
PLZZZZZZZZZZZZ

I don't know what you mean. Do you want a suggestion for a distro and then steps on how to install it?

Step 1. Pick a Linux distribution.
Step 2. The website for the distro you chose should have documentation. Follow the documentation exactly.
Step 3. If you have any problems, post them here.

Edit: This should really be moved to the "Choosing a distro" forum, as this is not really "Off topic".

Moved.

If you the most painless way to go about it, go to vmware.com, download the free VMware Server. Install on your Windows system. Choose whichever distro you want or pick several to try. Create a virtual machine for each and run through the install on each, noting problems or other issues. Work with Linux and put it through its paces. Once you are confortable, you can then move to installing on the physical system.

When you spend all your time working in the virtual world, the answer to every problem is to virtualize!

The first Linux distribution I ever tried was Red Hat Linux 8. (Yes, it was a long time ago.) Not only was it easy to install, but it had lots and lots of programs. I enjoyed it, until I realized how slow it was. It was a slug. It took roughly 10-15 seconds just to open Konqurer.

The next distribution I tried was Ubuntu. This also, I found was slow (and this is my least favorite Linux distrubution, by the way.)

Next, I tried Debian. Debian is one of my favorite distros, because it is "pure" Linux, everything works, and it's very fast. Thumbs up for this one.

After I had tried Slackware, I thought that it was the best ever. It was even faster than Debian, and although you definitely cannot be a Linux newbie when using Slackware, I found that you learn far more about Linux with Slackware than with any other distro. This one's also good.

The latest distribution I am using is Gentoo. I like the fact that everything is compiled, so you get optimal performance, and that you see exactly how a Linux subsystem works (especially if you use the Gentoo Minimal CD). I have 2 servers running Gentoo, and although it's not the fastest to install, and requires a broadband Internet connection while installing, it's my favorite Linux distro to date.

Joeprogrammer:
how much ram do u have and do u have an ATI or nvidia gfx card?

These cards dont like linux that much and less than 384m RAM wont run ubuntu.

I have an 8mb gfx card, 384mb ram and 600mhz CPU and it runs fine

proliant_fan:

I have an old dell laptop with 64MB of RAM running ubuntu, and older hp with 256MG of RAM running ubuntu and onther desktop with 128 MB of RAM running ubuntu.

64mb?

My 128mb system runs like a slug

The PC I use for experimenting with Linux distributions is as follows:
Intel Pentium II
Clock speed: 300 mhz
RAM: 128 MB (used to be 64 MB)
GPU: Trident 3D Image w/ 4 MB memory

So yes, it's not the fastest computer around, but it's OK for experimenting. That's why Ubuntu ran so slow, but even on a Intel Core Duo, it's still behind the other distros.