Capturing high voltage sparks with a DSO

[mcinque]

I'm about to do some "poor man ESD discharge tests" on my last circuit, using a BBQ piezo igniter.
Basically I will put some sparks on the front panel of the case, near and over all the pushbuttons and objects that could be touched by the user.

By using the one shot triggering on my DSO, I'd like to capture any glitch or spike that could go on the pcb instead the discharge path I've created.

I believe that BBQ piezo igniters can produce about 5.000V and I don't have a high voltage probe, so I was guessing that using 10x 1MOhm 1/2W resistors in series should do the job, but since my lack of knowledge often makes me do stupid things, I guess that it's better to ask an advice 

What do you suggest?

[Neilm]

EMC ESD strikes have a very fast profile, so you would need a decent scope to get the spark transient. At these frequencies, the inductance of a wire wound resistor will have significant effect - probably over whelming the actual signal.

Also, your scope input could be easily be affected by the strike which can seriously affect the triggering meaning you don't see any real data. (I've tried to capture 15kV strikes using various probes, without any real success)