>
>        I would suggest (though I like ascii schematics just fine) either
>attaching a bmp,
NO!!! use GIF, preferebly  - very efficient compression for graphics,
if you must use BMP, please ZIP it first! 
 ..jpg
Great for photos but a poor choice for diagrams

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   _/ L_/  Mike Harrison / White Wing Logic / wwl@netcomuk.co.uk  _/ L_/
 _/ W_/  Hardware & Software design / PCB Design / Consultancy  _/ W_/
/_W_/  Industrial / Computer Peripherals / Hazardous Area      /_W_/