I found alot of people complaining about the slow network browsing with Windows 2000 and XP, but fast with 95/98 working on the same server with too many files listed in one directory (8000 in our clients case). Note: This tweak only applys to LAN connections.
Create a text file on the server put this into it:
Windows Registry Editor Version 5.00
Save the file as WHATEVER.REG not WHATEVER.TXT
Then double click on the file to apply the setting (once again on the SERVER not the pc accessing the server).
What this does is it sets the DIR commad's buffer from 14000 to 65000. This fix works on NT/2000/XP.
I used this after using the other fix i found on this site which did not help.
This was brough to you by Infomax, the best group of techies in Manhattan :)
look us up.