Mapping Software

[Jakey]

Does anyone recommend any free software which will allow me to highlight multiple locations at one time? I can't find anything on Mapquest, Yahoo Maps, or Google Earth which will allow anything like this. MapPoint allows it via use of the "push pin" feature, but I don't have access to the software anymore. Basically I need one map showing the US and Canada, with these locations noted, pinned, something:

Iowa State University, Ames, IA
Ag Leader Technology, Ames, IA
Raven Industries, Sioux Falls, SD
John Deere AMS, Urbandale, IA
AutoFarm, Menlo Park, CA
Outback Guidance, Hiawatha, KS
SATLOC, Scottsdale, AZ
CSI Wireless, Calgary, Alberta, Canada
Trimble, Sunnydale, CA
Beeline Technologies, Westminster, CO
Cultiva, Swanton, VT
Farm Works, Hamilton, IN
Mapshots, Cumming, GA
Kee Technologies, Sioux Falls, SD
Midwest Technologies, Springfield, IL
Terradox, Calgary, Alberta, Canada

Thank You