umm go to the cfgs folder and make sure you have a rocknes.cfg (or nes cfg or whatever the dat file is called in it's header) If it's not there copy and rename the template.cfg. On the extension field change the extension from .zip to .nes. There shouldn't be a space between unless you actually put a spare space somewhere and it's adding it in. In other words don't put a spae betwen the "=" and the ".nes", put them against each other. Some games require a space for certain things, so I can't filter them out. Also make sure the emulator path and exe name is pointed properly and you will need to use the show full path in order for the extension to show up.
Also many of the nes emulators don't accept long file names, which means you need to use the command line wrapper and turn on "use short filenames" inside it.
Ok I'm not ranting here, just for future reference. Although lazarus has the capability to run console emus, this is totally against the spirit of it. If anyone followed the original Rd they know that I flat out refused to support console emus. I did this because I think they go against the spirit of mame cabs. I made lazarus as flexiable as it is to aid in adding arcade emulators, not console one's. I still don't have a single console emu running on my setup because I realize that they can only be played properly with the original console controller. Only when I get my psx/n64 to usb adaptors will I even think about setting some up as I will have suitable controls. With that being said, you'll also notice that I've never be-rated or denied helping others with lazarus just because they want to setup a console emu. What you do with lazarus after you download it is your business, and I'm glad to found even more use for it than was intended. BUT, bottom line is I'm not going to bend over backwards to make sure that lazarus and it's wrappers will run the console emus, simply because my personal belief is that they shouldn't be anywhere near arcade controls, and if emulated should be conrolled with a gamepad at the very least.
This isn't meant in any way to make people mad, this is just for future reference. If you can't find a way to use the wrappers for vivanonno(which btw can't be wrapped in the newest version :-( ) then I'll be willing to add new code to them to support it, but if you can't get rocknes or some such nonsense to work then your probably out of luck unless I'm feeling generous. This isn't to say that I won't help you with your configuration, but I probably won't have any great drive to add support. But anyway with that aside 90% of the emulators out there will run fine anyway, you just need to tweak your configuration.