homemade EFIS system and EMI

Thanks Evan, I have eyed that book at the local bookstore and given
that you mention there is a section (and paranoid no less, a good
thing) on this I'll purchase a copy. Books like this can save a lot of
hair being pulled out.

The enclosure I made is riveted and there are very small gaps in
addition to where the mandrel pulls out leaving a small hole. Would
encompassing the whole thing in aluminum foil (as a test, not for
deployment) accurately simulate these sophisticated seals? Before going
through that effort I would want to know what, if any, gain I may
derive.

Ernest the MB only has one DDR slot, where a single 512 Mb card is
plugged in.

I am encouraged that if the power supply issue can be solved via
shielding I will be set. The people at ituner admitted the PW-60 DC-DC
power supply was a noise daemon but there new super improved model the
M1-ATX ( http://www.mini-box.com/s.nl/sc.8/ca...it.A/id.356/.f )
model would solve this and they are sending me a unit, they are willing
to work with me which is quite good customer service.

If it is still too noisy I'll get paranoid with cases within cases,
welding, prayer, etc... If still too noisy (please no) I'll do my own
power supply,

Thanks for the replies.