You put the clutch down when you tried to start it, right?
Obviously a spark is not getting to your motor. The battery works fine if all your lights c'mon and don't eventually die, so there's something in between like the starter/distributor that's not responding to the ignition. Perhaps a blown fuse has wiped some systems out? Check your spark plug wires and connections, distributor, etc.
Not really sure what it could be, or wether the fuses would even prevent your car from starting, but it's worth a check. I blew a fuse once in my GTI and it wiped out my power windows, locks, sunroof and truck opening system in one fell swoop. Simple fix. Hope you find out what's wrong and it's not expensive.
OT: Where'd you find the 3M IHG in town? I've always ordered mine online and been forced to wait the 4 days or so it takes to get here. It'd be nice to save that time.