[pct-l] Ultra-light Digital Camera Recommendation

[djpercival at cox.net (Joe Percival)]

I'm looking for a small, light, digital camera for my planned 05 PCT hike. I
want to be able to mail memory cards home and to be able to replace
batteries on the trail.  I could use all the various option settings, but
this is not a priority for the hike.  Most important features include:
Weight
Size
Replaceable batteries
Dust/humidity drizzle resistant

Thanks in advance!
joe