Router model number should be on the router somewhere. The mac address you got from that wifi scanner software is most likely correct. To regain access to your router, follow the instructions on your manufacturer website on how to reset the password and use the default. This is all assuming you have physical access to the router of course.
Er, either he edited that or I suck at reading at 4AM (possible)... Long story short, don't try and get into things you weren't meant to get into. If you don't have access to it, its for a good reason and leave it at that.