Alright, sounds like you are more than just a newbie at this. And I wonder how much of the techical jargon posted here you really understand. Try to follow me and let me know if you can\'t.
First of all, for our purposes I will assume that have a full version CD of Windows 2000 Professional.
The Windows 2000 Professional Setup contains a blue screen with the things mentioned by Tracky110XP. Make sure you get past the License Agreement (EULA) by pressing F8, and, as he mentions, pres ESC to run a fresh installation if necessary. On the next screen, delete all partitions that you can until you have just one big partition. When you hit ENTER on the partition then to install the OS to that partition you will have a few MBs left over - typically 6-8 - and is used, as Twinkie mentions, to allow you to convert your disk to a dynamic disk once you have the operating system installed. You will be asked how you want to format the partition. Choose NTFS and let the setup program format your new partition.
After the format is complete setup will copy files to your hard drive from the CD. Watch the copy process and make sure you don\'t tell it to skip any files that it can\'t read from the CD. Sometimes, if the CD is scratched or if it is getting read too fast or any other number of problems that can cause input/output (I/O) problems, you will see a message that the file couldn\'t be found on the CD. The message will prompt you to hit ENTER to retry or Ignore to skip the file and continue. If you get this message window and you don\'t know what the file being identified is used for, retry or abort setup and get a good CD. This message is more often than not the result of the CD being damaged. If that still doesn\'t fix your problem get a new CD-ROM
Once the file copy process is complete Windows 2000 Setup should begin and you should be able to install the operating system with all your options selections. If you do all this and you still can\'t get the operating system to install, you have a hardware issue that you should get resolved.
A note about Space Between\'s comment: he\'s right. Depending on what you consider acceptable, the minimum system requirements for Windows 2000 Professional are not nearly enough to run the operating system and any other worthy programs. While you can run Windows 2000 Professional on a 350MHz computer, the operating system itself takes up so many system resources (including RAM) that it is too difficult to run other programs. At least upgrade the RAM in the computer if you cannot upgrade the CPU and motherboard (in other words, if you can\'t buy a new computer).
Hope this helps out a bit.