A long shot, but a possibility ... See if your modem is sharing an IRQ with your video card. This happened to me a while back. I had my Video Card and Network Card on the same IRQ after installing WinXP (failed to notice that initially) and everytime I'd enter a graphically-intense part of EQ (Say, Bazaar on EQLive) my lag would spike hard. 
		
	
		
		
		
		
		
		
			
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				-- Woody
			 
		
		
		
		
		
		
	
		
			
			
			
			
			
			
			
			
			
				
			
			
			
		 
		
	
	
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