MOTM

Does anyone know where I can get software for my g-4
powerbook that would make it give me signals like on
oscilloscope?  I know they make some kind of device...
I also need to know what kind of hardware does it take
to hook probes onto the computer, I assume it must be
some kind of firewire device, next question is 
Am i better off buying a oscilloscope on ebay?  I
bought a dual trace 20mhz on ebay and it puts out the
most disgusting smell to me.  When it warms up it puts
out a smell like nothing I have ever smelled before. 
Doesnt smell like an electrical smell.  other than
that it works fine, but I cant handle the smell.  
I was looking for another scope when I remember seeing
somewhere there is software to do this and my
powerbook is no longer used by me (I out grew it)
maybe I can make the computer do the job.

what do you all think?????
John

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