burning woes

[bmike101 at cox.net]

Well, I downloaded a simply mepis ISO and burned it  and   
it runs grub (I believe?) and then tells me that it found  
simplymepis then  it says :  
	hds: tray open  
	end_request: I/O error on device......  
then it also says:  
	cloop=error -5 uncompressing block <block numbers>  
  
Does this sound like a burn error or a corrupt down load? 
I would check the download but I do not know how to do the 
MD5 thing. Would someone care to inform me how to use it??