This tweak is used to install NetBeui a easy way to network computers at home without having to worry about configuring ip addresses etc, it enables windows 98 and earlier to communicate with XP. you can get the files of the XP CD or follow these instructions...
1. download this file: http://forums.itrc.hp.com/cm/components/FileAttachment/0,,0xcd178f960573d611abdb0090277a778c,00.EXE
it is all the netbeui files needed to set it up on your computer.
2. copy nbf.sys into the %SYSTEMROOT%\SYSTEM32\DRIVERS\ directory
3. copy netnbf.inf into the %SYSTEMROOT%\INF\ directory
4. open network connection properties and use "Install..." button to add NetBEUI protocol
5. restart your computer - and your done!
N.B. %SYSTEMROOT% refers to the location of your o/s in most cases this is C:\windows