I made a post about this a few days ago, copied for your convienance: 
 
If you're attempting to run EQ on the same machine you're running the server, this might help (needs Win2K or XP and EQW): 
 
Run EQ. 
CTRL+ALT+DELETE and go into the task manager. 
Look for EQGAME.EXE, rightclick, go Priority->BelowNormal. 
Look for WORLD.EXE, rightclick, go Priority->AboveNormal or High. 
Look for each instance of ZONE.EXE, rightclick, go Priority->AboveNormal or High. 
 
If EQ lags TOO much, you can try setting its priority back to normal, however leave the world\zone processes running at a higher priority. 
 
This helps a TON when I'm running a server and EQ on the same machine, since DirectX tries to use all possible system resources when running, and the emu ends up lagging\disconnecting a lot. 
		
	
		
		
		
		
		
		
			
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				~ Xarslik 
[ Xarslik's Arena Challenge Server ]
			 
		
		
		
		
		
		
	
		
		
	
	
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