There may be those who don't care about running older OS's, and if so, just ignore this thread. This is for those who still wants to run Windows 2000 Pro, or is interested in trying.
First, you either need a computer that Windows 2000 was meant to run on, where drivers are still available from the OEM. Dell & IBM/Lenovo has a massive database of drivers for older computers. With newer computers, I won't say it's impossible, but it will be difficult finding drivers that works. Although many drivers claims to work with W2K/XP, this is not always the case, as I found out when I attempted an install on my HP MS214 AIO desktop, built in 2009.
The drivers (from AMD), although they worked quite well when I installed XP Home, Pro & MCE on it, didn't work with W2K. So to save a lot of trouble, it may be best to find a computer that was built for XP, and the market is saturated with them. eBay & Amazon are good places to begin looking, if you don't have one. Keep in mind that 120GB hard drives is the limit, as if an install is attempted on a HDD over either 127 or 137GB in capacity, even with SP4, it's a no go.
There is an "unofficial" SP5 that was written by MS engineers, but due to the fact that at that time MS was pushing XP, just as they're pushing Windows 7 now, it was never released for download. However, it contains many updates & hotfixes (over 400), and once installed, you have IE6, rather than IE5. It can even be slipstreamed into the install disk, making for many less updates to install. The unofficial SP can be obtained from here:
|MG| Microsoft Windows 2000 Unofficial SP 5.1.2195 Download
There are no viruses or malware in this SP, but as I always advise, scan it anyway.
Speaking of viruses & malware, security is going to be an imperative item that cannot be taken likely with this OS (nor any other, including Windows 7). At present, ESET NOD32 AV5 runs quite well on the OS, as does Malwarebytes Pro (MBAM). ESET is getting the bugs out of Smart Security, which contains a firewall that W2K lacks, so that it will work also. Some users has no issues with ESET Smart Security on W2K, it may depend upon the computer. MBAM Pro is an excellent choice to block malware on W2K, and most any Windows OS. Out of the many years that I've ran W2K, I've never been infected with a virus or malware. Just some tracking cookies that SuperAntiSpyware (SAS) removes quickly.
Now for a decent browser. Except for Windows Update, I highly recommend to stay away from IE6. The latest Mozilla Firefox (version 10) & Opera (version 11.61) browsers runs perfectly fine on 2K. You will need the latest Flash for both that W2K supports, and IE, as well as Java for some sites. Currently, the latest version of Java that will install on 2K is "jre-6u30-windows-i586". Flash (non IE, version 11,1,102,55, IE, version 11,1,102,55). Latest Adobe Reader supported is 9.4 Ultra Defrag 5.02 is about the best defrag software available.
All of these versions can be downloaded from File Hippo, as well as the browsers.
FileHippo.com - Download Free Software
Plus, there's many versions of software listed on that site that runs well on 2K. CCleaner, Recuva, the above browsers mentioned, and much more.
And remember, if you're dual booting W2K with XP, W2K will benefit from many more apps, such a defrag & backup software, that won't install on 2K.
The bottom line, if one keeps W2K secured, and uses a modern browser, coupled with safe computing habits, it's still quite a usable OS, and simple to use.