i really dont think you should be sharpening the chain with one of those. the teeth have to be cut at a certain angle and pitch. otherwise it wont cut properly.
also using that could cut the actual links and make the chain weak causing it to break and proberbly chop something off you might need, like an arm or two.
i know for the stihl saws you can get a proper hand sharpening kit that contains a clamp, file and gauge.
always remember chainsaws are very dangerous and arnt worth using cheaper methods of maintenance., best of luck.
rob t
January 2008