At my wit's end!

[richfolsom]

Electrical. Battery dies after 2-3 days of not driving it.

[azruss]

this means you have an electrical drain when the car is off. radio, clock, etc. disconnect the ground from the battery and see if you get a spark when you connect it again. May want to leave the ground off and see if the battery still dies after a few days. could simply be a weak battery on the way to never-never land.