Server OS's

You must partition your drives... make one active... install the OS in question... shutdown... make that drive inactive, make another active...

Or you could just partition your drives, and use BOOTMAGIC to select which OS to load on startup.. very easy to use.

As stated above, you can partition hard drives and then boot to the appropriate OS you wish to run at that time. This is great, but sucks when you want to play with 2 or more at the SAME time.

So, to play with them at the same time - first off you need to pretty powerful pc/server with a LOT of ram, but you can use VMWARE (vmware.com) and run multiple OSes at the same time within one another. I have Windows 2000 with VMWARE installed and then I have Linux running within Windows 2000. At the same time. I can copy and paste between them. Its pretty cool. There is another piece of software called Virtual PC that is similar to VMWARE, but not the same. Plus, I have heard that Linux support has been removed.

The only bad thing about VMWARE is that it does not support ALL possible OSes, but it does the most popular ones (Windows, Linux, FreeBSD).

Check it out, I think they have a demo available ( dont quote me on that).

Number 2 is correct, vmware does have a 30 day trial of vmware workstation 4.0, that you can set up NetWare 5&6, Linux (many flavors), W2k and XP. Be forwarned that it isn't user friendly and there is NO support unless you buy it. It also takes a considerable amount of ram to run say a WS and a server at the same time. I upped to 1GB in order to run a test of NW6 with a W2K client and then 30 days ran out.