Need rugged cameras for real estate office

[FaciaBrut]

I work in the marketing department of a large real estate office in Albuquerque, NM. We have two employees who drive around to the new property listings to place the real estate signs and take a few digital photos for the local MLS. Our fleet of older Nikon Coolpix cameras have served us well but have taken quite a beating over the years and we need to replace them affordably. We need something extremely durable, maybe around 4-5 megapixels, nearly point and shoot simplicity, more emphasis on wide angle than zoom, and can take a screw-on filter to protect against the blowing sands of New Mexico. We don't want to spend over $400 per camera. Any recommendations would be appreciated.

[BillDrew]

Steve has some reviews of cameras you might be interested in at
http://www.steves-digicams.com/cameras_wr.html