[Mylon]

The XP disk has a network setup wizard you can use to run on non-XP machines. This will copy XP-networking files and protocols onto these other computers so they will be more compatible.

However, I should let you know that I have never done such for my network and I have learned to get around it. Basically, if you don't do the above you'll have these problems:

2)Win98 will not be able to copy files from an XP machine in the root directory of the shared folder. Files in subfolders will copy fine. This isn't always the case...
WinXP sometimes doesn't like sharing with other XP machines. 1)I get access denied Messages trying to copy files from one machine to another. This applies to some shared folders (like custom folders), but not others (like Shared Documents).

I have had some fun in playing with my network. Like I would share a CDROM drive, put a CD in it, and then use the networked drive to install a program onto every computer in the network simultaneously. It takes longer, but once it's started I can walk away and do something else, as opposed to having to move the disc to another computer and start the installation process again.